NB!!! Early mk2 Golf 16v's (up to and including '89 spec) used 239 front discs - with a hub carrier that is broadly the same as a 1.0 or 1.4
Ibiza (not sure if the caliper carrier bolts on seperately on mk2 Golfs - it does on mk1 Golfs, mk1 Jettas, and mk1 & mk2 Scirocco's. Anyway...) and these are not the ones you want. Be warned. It's the hub carriers from a '90 or '91 spec mk2 Golf 16v you'd want for a 256mm or 280mm brake conversion.
Other than that, all the other options seem sensible. You'll probably pay more if they're advertised as "G60" or "Golf Rallye" ones though.