i like the gotoh but to be honest any of those are good quality units, it's mainly about personal preference (which is hard when you haven't tried them).
if you want to see if you can get to try all those, musicman and suhr use gotohs, caparison and high-end washburns use schallers, and things like jackson USAs use OFRs...
I've heard that some OFRs are now starting to be made in korea (i think they're called the FR-1000/2000/3000 T (chrome/black/gold given by the 1/2/3 in the number, i think), things like the jackson sl3, those new charvels etc. might have them. so just be careful, i guess, i have no idea if the korean ones are worse, better, or the same quality as the older ones, but it's worth bearing in mind.