The Tiger .60 often comes out a bit tail heavy, so a heavier engine will not only be less expensive, but it may help you balance the plane better. You mentioned that you are looking for durability, reliability, and user friendliness. I'd recommend that you strongly consider the outstanding Thunder Tiger F-91s for your engine selection.

The TT F-91s has a reputation for outstanding power as well as terrific durability and reliability. The only knock against the F-91s that typically comes up is that it weighs a few ounces more than comparable models from other manufacturers. In the case of the Tiger .60, the weight of TT F-91s is a virtue that will make it easier to balance your plane.

Don't let the $184.00 selling price at http://www.radicalrc.com fool you, either. The TT F-91s comes with a full three-year factory warranty.