I'm looking for a set of training wheels and have whittled down my choice to either Mavic Aksium, Fulcrum Racing 5 or Kore Gradient. The first two wheels have a pinned rim joint while the last is welded. These wheelsets range in weight from 1855gms to 1567gms. The Kore Gardient is around 25% more expesnive than the others (and has an unconventional skipped spoke lacing). If anyone has an opinion on the positives and negatives for these wheelsets I would really appreciate your thoughts. I have looked at reviews on the internet but they were scarce for the Kore Gradient and few and far between for the Fulcrum's (which I guess reflects the relative sales of these wheels more than anything else). Thanks.