I've been running an OS .46 with a pipe and getting pretty good results. However, due to some stupidity on my part I let the engine sit and get all rusted up. I could replace the bearings but the sleeve has some pit marks in it. I figure by the time I replace everything I'll have spent as much as if I bought a new engine. So my question is, what's the best all around .46 or .50 out there now?