We have 2 x .40 NT's (Ex- RTF's) 4 x .46's, 2 x 1.00's, a 45 GX and a 58GX amongst our collection - Haven't had a bad one yet -I think that they are every bit as good as (or better than) the current common model OS's such as the 46AX (we have 4 of them) and the .40 FX (we have 3 of them) and the 1.20 AX (We HAD one of them) and I am absolutely certain that the Gas engines are better than some of the other low priced brands (But not as good as our DA's).

I personally don't think there is a "Perfect" engine brand due to the economics of making a truly excellent engine - how many people willingly pay the price for Jett's for instance (We also have 3 of them and for performance, they are most certainly my favourite of all the smaller glow engines that we own- but they are only used for special purposes where power to weight does matter)