And just for clarity - LA, FX and AX are all OS Engine product lines. Other manufacturers have their own mind-numbing naming convention (just kidding).

[link=http://www.osengines.com/engines/airplane.html] OS-Engines Airplane Engines[/link]

Check the links at the bottom for parts lists and manuals if you're so inclined. OS also had a "model / engine" recommendation page where you can look up some manufacturer's planes and see what OS suggests as an appropriate "economy" engine and what they consider "modeler's choice". Gives you a chance to stand back and see how things align.

When you get to the point where you are matching an engine to and a plane - open another thread and ask for opinions. Gawd forbid, this being such a modest group 'an all you may have to "plead" for replies.

Inoticed that you're at about 2500 feet. Just know that these little beggers loose power at elevation. I'm at 5500' and am down maybe 25%. I'm very cautious when someone rants and raves about a certain engine / plane combo and they fly at sea level. We typically up-size (sometimes over the top) to compenstate. Local gurus can be very helpful.

Good luck.

Btw, Ihave a spreadsheet (sourced from a database)that includes 12 or 13 manufacturer offerings, links to sales and technical sites, weights and dimensions and to some degree "technical profile"that includes piston / cylinder sealing (ringed, ABC, etc.). If you are interested PMme.