If your room isn't too big the surprisingly affordable answer might be 3 pair pf
Behringer B2030P bookshelf studio monitors at $140/pr. I use these in my home-office and they sound pretty good stock even better with the DIY mods that WmAx developed. You'll have to search the forum to find the directions but they really work. Add a properly sized subwoofer from Elemental Designs, Hsu Research, or SVSounds and you'll have a rocking 5.1 system (plus a spare) that will do well with rock, jazz, and classical for $1000. These are 8ohm so the 608 will drive them fine. The downside is they are industrial-homely looking.
I'm looking to replace my bedroom speakers early next year so I've given this some thought. I mainly listen to jazz, newage and acoustic guitar in my bedroom and for that (just based on Audioholics' reviews) what I have on my list of contenders so far are
Usher Audio's S-520, and
Emotiva's ERM-1 bookshelves but with a center would eat up most your budget leaving almost nothing for the subwoofer and Ushers are 4ohm and so are
not 608 friendly. They also may not be your taste. I listed them just to illustrate why you need to decide on speakers 1st. BTW Audioholics' pro reviews are a great source of information.
Speakers are very-very subjective and what I like you may hate so take CDs that you know very-very-very well and plan to spend hours listening at your local stores. I'd listen to every pair of bookshelves and center in the $500-1200 (for the three) range that you can find and choose what
you like. I'd reserve another $500 for a subwoofer from one of the 3 internet direct companies that I listed above. They own that market and you'll get your best sub bang for the buck from them.