Which to buy - I have been waiting to upgrade my dual core G5 running Premier:
Mac Pro:
£4,426.01 incl. VAT Ships: 6-8 weeks Free Shipping
Specifications
One 2.93GHz Quad-Core Intel Xeon
6GB (3x2GB)
Mac Pro RAID Card
1TB 7200-rpm Serial ATA 3Gb/s
ATI Radeon HD 4870 512MB
One 18x SuperDrive
Apple Cinema HD Display (30" flat panel)
Apple Wireless Mighty Mouse
Apple Wireless Keyboard (British) and User's Guide (English)
Vista option:
\tDell Ultrasharp 3008WFP 30" Widescreen LCD Monitor\t\t£1115.49
\tIntel Core i7 940 2.93Ghz (Nehalem) (Socket LGA1366) - Retail\t\t£471.49
\tLian Li TYR PC-X2000 Aluminium Full-Tower - Black (No PSU)\t\t£339.24
\tAsus P6T Deluxe Intel X58 (Socket 1366) PCI-Express DDR3 Motherboard\t\t£243.79
\tCorsair 6GB DDR3 Dominator PC3-12800C8 1600MHz (3x2GB) DDR3 £172.49
\tAkasa AK-P120FG 1200W Xtreme Power Supply\t\t£166.74
\tAsus ATI Radeon HD 4870 512MB "Dark Knight" \t£165.59
\tMicrosoft Windows Vista Ultimate SP1 64-Bit - OEM (66R-02034)\t\t£155.24
\tSeagate Barracuda 7200.11 1.5TB SATA-II 32MB Cache - \t£114.99
\tLogitech Cordless Desktop MX 3200 Laser (967688-0120)\t\t£57.49
\tAkasa AK-967 Nero Direct Contact Heatpipe CPU Cooler\t\t£31.04
\tSamsung SH-S223Q/RSMN 22x DVD±RW SATA Dual Layel\t\t£22.99
\t\tSub Total

t£2,657.8
My son has specced this setup, and tells can do the build.
£1800 cost difference!!!!!
The previous generation Xeon Mac Pros costed out about equal, considering dual socket boards etc, but these look over expensive to me. I need AVCHD, so an upgrade is now urgent.
I may have to jump to Vista!
Or I could buy a second hand 8 core Xeon?
Am I missing something?