I've also looked into compact dumbell systems. Bowflex and powerblock seem to be the most popular. But there is one by Ironmaster. They go up to 75 pounds and you can get an add on set to go up to 120. They look cool too. I do not like going to the gym, so I like to buy my own iron. I have not yet purchased a set of these, but you can bet I will when I need to. Right now I'm restocking my barbell, and olympic plated after my last move.
Good luck.