I've done a off searching and probably have just not used the right terms.
It seems the extruded aluminum edge, some with vinyl insert, is pretty common and reliable. So:
Do most builders go all the way around, even when it turns under like a new cub shape? Would require sealing to walls and roof of course, a debated point I read.
How do you seal a joint - just a tight butt joint and caulk?
No problem bending to a 24" radius?
Any other more economical options that will perform a similar function people here have used?
Thanks!