Sorry I didn't get right back to you. Work keeps getting in the way of my obsession, er habit, er hobby. You really can't go wrong with a UCD .46. I flew mine with an old .46FX on a tower .46 muffler. I used APC's 12X4, 12.25X3.75, and 11.5X4. For hovering I liked the first two, but at my field, with rough grass runway, the thin tips on the 12X4 suffered, so the later two "wide" blades held up better.

I now have a .50SX with a tower pipe in the UCD, but truthfully, there is only a little more power than the .46 with the pipe, I mean tower muffler. We have several real aces on 3d (nationally competitive, unlimited freestyle guys) that love this plane for fun 3D flying. They are all using the new OS Hype .50 helo motor with 30% nitro, which allows them to hover at around 50-60% throttle and rocket out like a home sick angel. I had a .91 4S on one of mine for a while, hovered like a champ, but the extra weight made a little difference in some of the more demanding stuff. You could spend the money and get a Saito .91 or 1.00, swing a 15X4 prop and have allot of fun with this, if you want to spend money. But the lighter, more powerful 2S's seem to be the weapon of choice for the serious 3D guys around here.

I love my matrix, because I am just as much into pattern type aerobatics as 3D. The matrix flies unbelieveably straight lines, and does the pattern stuff on par with larger planes. I reward myself with pattern practice, by throwing the high rates on and doing harriers, waterfalls, tumbles and unbelieveably wild snaps with this plane. The matrix is not as forgiving as the UCD on high rates, a little higher wing loading, and can fly fast, too fast if your not careful with throttle management.

If this is only your third plane, I might recommend the UCD, because it is a 3D trainer, cost a little less, and there are many threads out there concerning setting this plane up. You can get away with std servos on this plane, just make sure your control hardware is very tight, with no play. The Futaba 3010,s have plenty of torgue for rudder and ailerons and the std 3004's will do fine on the elevator halves.

Hope this helps, sorry I couldn't get right back to you. feel free to email me, directly if you have any serious build questions. My email is MikeBoyd@ excite.com.