I've broken quite a number of things, but the most frustrating was the rounding of the hub hexs. Not my fault, but put me out untill parts came.

Savage 14:

I have the .18SS and have had very good success. I would not say great, the back plate kept wanting to come off mine. I just recently worked on a friends Stampede that has an OS engine in it. I liked it very much and was able to hold a tune.

Yes it can take the roto start.

I really think either is good.