There are two version of the MAc G5... they are imac G5 and powermac G5.. the imac range starts from 75k and the powermac starts from 97-98k.. howefver the powermac comes without a monitor...
Here are the detailed specs:
17-inch widescreen LCD
1.8GHz PowerPC G5
600MHz frontside bus
512K L2 cache
512MB DDR400 SDRAM
160GB Serial ATA hard drive
Slot-load Combo Drive
ATI Radeon 9600
128MB DDR video memory
56K internal modem
so imac g5 will suit you much better....
keep in mind applications aare optimized for a mac.. so they run faster on a mac than on a PEE CEE running winDOZE