About 6 months ago I built a pretty kick ass machine and now im feeling like I want more. Has anyone here tried running 15k RPM SCSI drives in thier setup?

My current setup is:

Core 2 Quad 6700
Extreme Striker MB
8800 Ultra OC 768 Video Card
2 Raptor X Drives in Raid 0 - I've added a few drives and removed raid since my initial setup
4 GB Memory
Dual Boot Xp Pro & Vista Ultimate


The things im thinking about doing are bumping to 8GB system memory, Vista 64bit, dual 9 series video cards, and possibly a SCSI interface card and a few 15K RPM drives.

Has anyone here built a gaming rig with SCSI drives before, are there any drawbacks? I know you get a smaller drive and they cost alot but damn the numbers look impressive:

Model
Brand Western Digital
Series Raptor X
Model WD1500AHFD
Performance
Interface SATA 1.5Gb/s
Capacity 150GB
RPM 10,000 RPM
Cache 16MB
Average Seek Time 4.6ms
Average Write Time 5.2ms
Average Latency 2.99ms

VS

Model
Brand Fujitsu
Model MAX3036NP
Performance
Interface SCSI Ultra320 68pin
Capacity 36.7GB
RPM 15,000 RPM
Cache 8MB
Average Seek Time 3.3ms
Average Write Time 3.8ms
Average Latency 2ms