FWIW.............. I love the 5 oohh........funny huh.
Anyways, I think they are a good platform to build on, strong, reliable, cheap, and parts are easily assessable. Not quite in the same league as the 3fifty, but a close second in my book.
As for power, I dont think it is as easy to make as much as the 4.6's, but defiantly much cheaper.
What all are you looking to get out of it?