I've decided to give my ageing game PC to a relative. It'll lack speakers so I want to add a pair. She's already staked out where it'll go and there's place to have two small speakers of the bookshelf kind. A sub wouldn't be bad, but I think it might get in the way. I'm looking for something very cheap but not crap - around $400. Self powered would undoubtedly be best so I was looking for reviews on some powered monitors but many of them look huge. Is there anything you would recommend?