Do you have any other Amigas?
I personally don't think the A600 has anything to offer over other Amigas.
If you want to play oldschool games I'd really recommand an A1200 with a HD some RAM and WHDLoad. If you want to use programs then I'd still recommend an A1200.
If you are REALLY short of space then go for an A600
(It's not THAT much smaller than an A1200 really)