if you don't want to pay out the ass for a good quality stick, check out shoryuken.com's Tech Talk section. TONS upon tons of information there, there's even a thread that shows off custom PS3/360 sticks.
There are guys making their own for the PS3/360 for around $100-$150 bucks. I'm modding my mayflash stick with sanwa parts, which should make it just as good as the $200+ Tournament Edition sticks. Stick costed me $50 and the parts costs me $70. Minimal work (hardest part is soldering 9 wires to the PCB but that's a piece of cake to me). If you aren't into soldering and just want to plug in the wires, you can purchase pre-wired PCBS (like the Cthulu for the PS3/PC or the prewired 360 PCBs) from http://gamingnow.net/DIY.html or http://www.modchipman.com/arcade-parts-boards-c-144_146.html.
Sanwa parts are kinda hard to come by as of late, you can go for Seimitsu buttons/joysticks.
There are guys making their own for the PS3/360 for around $100-$150 bucks. I'm modding my mayflash stick with sanwa parts, which should make it just as good as the $200+ Tournament Edition sticks. Stick costed me $50 and the parts costs me $70. Minimal work (hardest part is soldering 9 wires to the PCB but that's a piece of cake to me). If you aren't into soldering and just want to plug in the wires, you can purchase pre-wired PCBS (like the Cthulu for the PS3/PC or the prewired 360 PCBs) from http://gamingnow.net/DIY.html or http://www.modchipman.com/arcade-parts-boards-c-144_146.html.
Sanwa parts are kinda hard to come by as of late, you can go for Seimitsu buttons/joysticks.