Well I've reached the top of the 3 yr. curve (pretty much on the down slope actually) and need to pop for a new system. Specifically is there a substantial difference between the Quadro FX1000 and the FX500 that makes the cost difference worth it? Are users satisfied with the newer SATA drives v. SCSI? Processors? P4 3.2 w 2Mb cache? v. plain vanilla P4 (sorry P4 only; old habits die hard). TIA, Hark [URL="http://www.harkawik.com"]www.harkawik.com[/URL]