Go the Opti. Great solid engine. Heps of power. Plenty of torque, Go like hell. Use bugger all fuel. Oil is not that dear. Get a set of ear muffs, though, as they are LOUD (but anything is loud compared to an E-Tec) and they huff and puff like a John Deere Charf Cutter. Nearly got 1 myself.
Cheers,
NICK.