Hey

Ive been looking at the UCD for some time and I read a lot on the forums and as far as I can see, the 46 is a better plane for 3D and has less issues.
1. I read that the 60 has firewall issues, does the 46 have those aswell?
2. Will the 46 with a Saito 72 beat the 60 with a Saito 91 in 3D performance?
3. Which one will be better for learning 3D on?
4. I looked at the specs of the OS .50SX and they are better than the Saito 72. I know that you want a 4 stroke for 3D but will I be better off with the OS?
5. What about those flutter problems with the wings on the 46? Is there any way to avoid them?

Thanks

Edit: I read a little more and now I found this tailheavy issue with the 46 sized UCD. Now the Saito 91 comes into play. Which one should I get? 91 or 72.. the 91 is only about $10 more.