Hard choice allways, monitors .... i'd spend abit more. I know this could be a problem. BUT you end (as me) in changing your Monitors as soon as you progress with your skills. You want to hear better, clearer, more definied in every region.
I hade EVENT 20/20bas, HS80/SW10, SAMSON Rubicon R6a, NS10m ... within 12 years or so. Today i was looking for the same as you ... a nice trio to fit my small table and room, ended @ MSP5 + SW10. I love them and i feel much better as with the HS serie.
Go with the HS50, think about the SW10 (if you want a nice, rich body which you dont have outa the 5" satellites) and be prepared to exchange them in some month, max in a year
I think personaly, every pair of Monitors is great if you know them. But you can have a lot more fun and easy going/less compromise with well spend money on a better, accurater pair.