Schaller!!!
Why? Cause its pretty much the industry standard for strap locks...Fender uses them on their higher end guitars...and youll find most(more) people use the Schaller type, so youll find your(own personal) Schaller setup strap will clip right in! I like this cause I feel right at home even when playing somebody elses guitar.
You are also able to find other brand Schaller types that are totally the same thing...only costing slightly less(around $15 vs $20).
Youre also able to buy replacement parts from StuMac, or even Fender brand lock pins(just the bottons) from MF. I really like these options cause youre able to get the guitar side only, like if you get a new guitar but already have enough straps or conversely if you just got a new strap(and no new guitar).
Since I got my strap locks Ive turned alot of other people onto the Schaller type...I really dont know anybody who uses the Donlop kind, but read about alot online. Often times my local shop only carries the Donlops, cause theyve sold out of the Schallers...sometimes it seems like a bother for them to do all that re-ordering, but if they aint got em when I need em I find them elsewhere...and usually for a better deal.
[edit]
sunvalleylaw said:
I am too far down the Dunlop road now so will stay with those.
Yeah, thats where Im at with the Schallers.
I also think the Schallers are more "Fender-y"...and couldnt imagine installing Donlops on mah Fenders...I shudder to think of that poor 60th of yours with Donlops

oke:
And
heres that topic with links