Phil, if you are leaning towards a Webra 120, there is a company in CA that takes the Webra 120 and modifies it to have an anadized head with 2 glow plugs, they change the sleeve to give it hotter timing, and change the carb. I saw a write-up in RC Report quite a while ago. They compared the Webra, TT, and Moki, and Bully (this is what they call it after the old bully - I guess) 120s. They ranked them in this order. They said that the new Bully was the best overall. Their pricing is very reasonable too, unless you already have a Webra 120. The new Bully, I believe was $249. I've seen them advertise in the AMA mag. If I stumble across it, I'll post their website. Maybe someone elese out there can remember it.
Kevin