There are several good choices. Nobody will ridicule you if you go with OS46FX, TT 46 Pro, Irvine 53, Webra 50 ... all good stuff, extreemly few complaints. Basically one guy says his perfect engine is better than somebody else's perfect engine. Personally of the 4 i like the Irvine 53 the best simply because its the biggest, but i wouldn't part with any of them.