It also depends on your body (frame) size and weights. First one is rubbish, second one is a bit small for me but looks decent enough for a home jobbie. It does look a little high for you though tbh, don't want to put your legs up like you're doing pilates.
For dumbbell weights I use few adjustable sets of cheap standard weights, considerably cheaper and far less screwing around changing weights over when running multiple sets. If you shop wisely you can setup a pair of 45kg for about $200, extra sets beyond that for convenience are less as you end up with a bunch of smaller weights.
For me, more pros than cons. I do have a perfect set in mind one day, but they are hideously expensive.