I also have two Troy Lite sets, along with extra plates (10# and 1.25#--they don't carry the latter anymore, though). I use them both at home, but they allow me to spend less time making weight changes, like when I do PUB.
I love pretty much everything about them:
The compact size.
The rubber-encased weights that won't rust (like my previous plates started to).
The dohickeys (brain freeze on what they're called!) that hold the weights on.
The fact that you can purchase components separately.
Definitely a worthwile purchase!