> I also
>really like to be able to go up just one pound if I want to
>(shoulder work comes to mind), or I can use several to go up
>more weight if I want.
Actually, you could go up just 1/2 pound if you want.
I have both, and while I haven't used the Paceweights yet (saving them for STS), I like the idea of microloading in a program like STS.
This is what I see as the advantages of each:
Platemates:
1) more attractive
2) easier to put on (they just stick right to the ends)
Paceweights:
1) allow for more gradual increases in weight (1/2 pound, using only one per dumbbell), so you can hit every 1/2 pound increment between dumbells that are 5# different. Going up in 1/2-pound increments makes the change barely noticeable to your body.
Neither of them should be used with neoprene or vinyl-coated bells, IMO, because the hold isn't as firm. Definitely don't try it with any over-the-head or over-the-face dumbbell postion, or you might be in for a heck of a bruise if the weights hit together and the magnetized weights are dislodged.
If you have neither, you could go either way.