Michael,
Have you seen the commander FAQ document the group or someone in the group put together? It's awesome and answers so many questions for "new people" to the commander. Just search for FAQ in the forum.
But here is the speeds by model from actual owners, I just cut and paste from that post:
Owner Reported Performance, Cruise
o112/A
4500ft, 24MP, 2500rpm. TAS 140 knots at 11.8gph, 11C. 2550lbs.
4500ft, 24MP, 2400rpm, TAS 140 knots at 11.5gph, 5C, 2340lbs
5000ft, 24MP, 2430rpm, TAS 136 knots at 10.3gph, -4C, 2550lbs
5500ft, 23MP, 2500rpm, TAS 143 knots at 12gph, +5C, 2400lbs
o112TC/TCA
8000ft, 31MP, 2400 rpm. TAS 145 knots at 12.5 gph, 4 deg., 2500lbs
7000ft, 31MP, 2450 rpm. TAS 147 knots at 13 gph, 51F, 2700lbs
8000ft, 31MP, 2350rpm. TAS 141 knots at 11.5 gph, -4 deg C., 2750 lbs.
12,500ft, 31MP, 2350rpm. TAS 146 knots at 11.5 gph, -4 deg C., 2750 lbs.
8,000ft, 30MP, 2400. TAS 138kts at 12.6gph, -4 deg C, 2500lbs
o112 Hot Shot
12,000ft, 25.5MP, 2400rpm. TAS 149kts at 12 gph, -15C, 2500lbs.
16,000ft, 25MP, 2400rpm. TAS 162kts at 12.5 gph, ISA, 2500lbs.
o112B
5500ft, 24MP, 2500rpm, TAS 139 knots at 12.4gph, +4C, 2450lbs
o114
6500ft, 23MP, 2510rpm. TAS 146.4 at 13.9gph, 7C, 2550lbs.
5500ft, 23.5MP, 2450rpm. TAS 143 at 12.7, 15C, 2700lbs.
6000ft, 24MP, 2300rpm. TAS 146 at 11.4, 51F, 2700lbs
11,000, 20MP, 2400rpm, TAS 150kts at 12.5 gph, -12C, 2700lbs
o114 Hot Shot
8,500ft, 21.7MP, 2320rpm. TAS 139 at 12.2gph, 16C, 2,700lbs
12,000ft, 24.1MP, 2500rom. TAS 157 at 16.1gph, 20C, 2700lbs
12,000ft, 24.1MP, 2500rpm. TAS 148 at 11.9 (LOP), 20C, 2700lbs
o114B
7,500ft, 21MP, 2500rpm. TAS was 150 knots at 14.8 GPH, 4 deg. C, 2950lbs
7500 MSL, 21", 2300 RPM, 150 KTAS, 14 GPH, 12 C, 2950 lbs.
o114TC/115TC
11,000, 29MP, 2200rpm, TAS 160kts @ 15.4gph, -12C, 2975
o115 (see 114B)
oSuper Commander
7500 MSL, 22.5", 2500 RPM, 170 KTAS, 18 GPH, 12C, 2950 lbs.
*** Don't quote me on my exact pressures and stuff below, this is just rough approximates and #'s that are pretty close, but I didn't take time to lookup up Manifold pressures that equate to power % ...just trying to explain the concept.
The reason turbos are faster up high is because they allow the engine to essentially to still have sea level manifold pressure at 10K, 12K 15K and at least 15.5 K ...but that's all the higher I've been and know for sure.
.....a non turbo ...any airplane type, cannot make full manifold pressure because the air is so much thinner so it simply cannot get enough air/oxygen/pressure to burn enough fuel to actually produce the same horsepower the engine can produce at sea-level.....
I'M NOT AN ENGINE GUY SO I AM SURE I KINDA SAID THAT WRONG and someone will chime in and correct me
So where as non-turbos performance gets worse and worse and worse as you go higher .....a turbo's stay's the exactly the same (essentially except for maybe the last few thousand feet near it's max it will eventually not max out, but will stay be WAY CLOSER to max than a non turbo)
So the 112-TC with the turbo maintains manifold pressure and gives you the ability to still cruise at your 33, 34 or 35hg (55%-75% power/cruise settings) .....a non turbo (just a ballpark # I read, don't quote me on it) motor at about 7,000 ft has to have full throttle to still generate 75% power ....as you keep going up, you have no more thottle to push, and therefore your power continues to decrease....the higher you go.
The turbo has the same power available at 7000, 10,000, 13,000 ft, and at least up to 15,500 ft (because I've been there in mine and still could run 75% power and still wasn't at full throttle) ...so as they slow down, we speed up, with turbos.
Again that's a "PHIL" explanation/paraphrasing of the reading I did 8-12 months ago ....and won't be exactly the right mechanical explanation probably ...but just google it and read up on it ....
I assumed a turbo was like a car turbo. You got more horsepower all the time ....than without a turbo ...but that's not really what the advantage is in our commanders ...it's the ability to still have full cruise power, when naturally aspirated airplanes are going to be running full throttle, but only 45 or 50 or 55% power while we still have 75% and usually more in reserves if we want to go higher.
If fly Basic Med, so I"m not allowed above 18,000 feet ...otherwise I'd go out and try it and report back on where my girls point of 75% power finally isn't attainable....
I'm sure one of these truly brialliant mechanical guys will chime in and correct my explanation, or point you to a post that does ...I was just trying to give you the basic idea, that I came to understand when i we deciding between a 112, 112-TC, 114 ..that made me realize ....all planes are not created equal when you fly HIGH

and the general advantage that a turbo brings ....it's not more horsepower in total ...it's more power availability way up high
Phil