RE: sig large sundancer arf
I purchased a second landing gear from Sig. The second doesn't seem as soft as the first one. However, if your landing isn't smooth you will be bending the landing gear back into position. If you can find a carbon fiber gear that fits and doesn't delaminate then go for it. Otherwise, smooth landings are the key.
I like the DA50 but I think I am sitting at 18 lbs. I have unlimited verticle but it is not with authority. Everyone in my clubs have complimented on the plane and the way it flys.
I have been experimenting with different propellors. I am about to try a PT Models CF 23x8 prop instead of the the Mejzlik 23x8. The PT weighs less. For wood props I like the NX props.
Try to keep the model light. I have way too much battery on board. But I can fly all day with no worries. Go with a light weight powerful engine and you will be very happy.
Have fun with yours. If you like bipes this is a good one.