That's what makes the horserace. Can't argue with what works, but when I'm doing it I use the best I've got on hand. I always keep some Sta-Brite on hand. Got some 3% silver solder at a local dollar store had and I hope they get more! I'm a real belt and suspenders kind of guy (and usually build overly heavy because of it). I'll put 30 hours in a 10 hour ARF assembly. ;-) And, knock balsa, I've never had a catastrophic in-flight failure of a mechanical or electrical connection (including hinges). Had a throttle arm pull off a SK engine but that was a design flaw - four pressed dimples to hold a the throttle arm in place. Just made for a longer than expected flight.