Unsolicited advice: avoid budget coilovers. $1000 on Konis/Bilsteins and a good set of springs will yield far better performance and comfort (and longevity) than $1000 coilovers. If you are SET on coilovers, pony up the extra cash and get KWs. Teins aren't terrible
, but I wouldn't spend my money on them.
I have had Konis/Swifts, Konis/Epics, RCE Tarmac Coilovers, and currently Bilstein PSS coilovers on my '06 GT. The Konis/Epics were VERY close to the RCE Tarmacs (which are essentially custom KWv2s) in both comfort and performance, and a hell of a lot more affordable.
I sell Whiteline, KW, and Tein, so let me know when you get your list together and I'll quote it for you. [/shamelessplug]