These ar basicly the same as the Current RF-62
My Best suggestion
RC-62 Center or RC-52 Center
RS-52 or RS-42 Surrounds
The 52 center and 42 surrounds are a bit smaller and thus less expensive but would work fine with you main speakers
As much as I love Klipsch Im not a fan of their subs...
My choice for an entry lever sub would but you over budget,
Martin Logan Dynamo $600.00 US
Perhaps some other posters may have some suggestions regarding this area