IO540, you're saying the Cirrus' use unnecessary fuel? Tell me, how huch does your TB use at a typical Cirrus cruise speed of 150 kts at 2000 feet? Most, if not all 200 hp 4 seat singles cruise in the 125-140 knot range at similar power settings where the Cirrus does 150. And, it does so with its feet dangling!
That's not actually true, once you look at real figures, LOP v. LOP and not looking at sales brochure figures.
My TB20 does 139kt IAS (low level say) at 11GPH. This speed is almost exactly (within 1kt or so) what an SR22 does at 11GPH.
That is why I am very sure that an SR22 does indeed waste a lot in the fixed gear. The alternative is that its very nice looking airframe is not significantly more slippery than a TB20 airframe; that is frankly also a possibility because we are not talking about supersonic speeds...
TAS for TAS they are the same too of course, about 155kt at 10,000ft at 11GPH.
The difference between an SR22 and a TB20 is that the SR22 has a bigger engine, so if you run both at say 65% the SR22 will be faster. But at a higher fuel flow.
Finally, beware the TAS comparisons in sales brochures because they are often at different altitudes.
Of course the
turbo SR22 will beat a TB20 on MPG at say FL170, quite significantly. As will a TB21 (turbo also). But that's a different argument.