Well, I tried just about every spinning (and similar) bike model available "on the floor for testing" in Sydney back in May. Unfortunately that collection didn't include Star Trac, Johnny G or Kettler, which you mentioned.
But out of those I did try, the best by far (in my opinion) was from Pulse Fitness. Just no comparison! I tried the 225, but probably would have bought the 227 because I'm a geek and like gadgets. The company's web page at
http://www.pulsefitness.com/prodgroup.html doesn't really tell you much (don't you just hate it when they "improve" a web site and get rid of all the useful stuff?); the link to the brochure is
http://www.pulsefitness.com/pdfs/gcycling.pdf. The 225F model in the downloadable brochure is slightly different to the plain 225 I tried; it must be "improved" too.
I had expected something called the Fitness Bike to be good, but I was quite disappointed (enough so that I think the shop must not have set it up properly, but I didn't bother chasing it up).
Most other models were pretty similar to that Reebok you mentioned: some were pretty clearly just badge-engineered, others varied to relatively small degrees, but all of that type felt fairly similar.
Anyway, in the end I bought a mag trainer, a set of rollers, and a cheapie secondhand bike to use on them. All up those 3 items cost about AU$1000, which was about the same as most of the common-or-garden variety spinner bikes in Australia (they ranged from AU$900 to AU$1200). The Pulse models were AU$1895 for the 225, and AU$2095 for the 227, for comparison (I still have the brochure and the quote, because I still might buy one some time!). Others were mostly between those prices, but closer to the higher end of the range.
(And the prices aren't super-inflated if you compared them to some of the fancier stationary bikes... the supposedly gym-quality models go for AU$2500-5000!
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