what's your room size? if you have a small room, i suggest spending a third of your budget, and get a pair of proac tablette 8 reference signatures. better than the 1sc's; i've heard 'em both in my big room, (as well as tablette 2000's), and the ref 8 signatures are better, from mid-bass on up. in a smaller room, it shouldn't matter.
in my big (26x38x8.5) room, they were crossed at 60hz to vmps larger subs, and it was amazing what room filling sound i got - it remained clean even at way-loud levels. in a smaller room, subs would be optional. (for most folks, that is - even in a small room, i'd have a pair of subs; not necessarily as large as my vmps' - which you could afford, if spending ~$1k on the monitors. in fact, i'd choose subs/monitors over only monitors any day, regardless of budget and room size.)
doug s.