nfn15037 is right. Tein offers shock rebuild or revalveing in the states. Down time is maybe a week vs 2 months if you have to ship them all the way to japan (and yes, if your looking at buying coilovers, stuff like this is important to you, otherwise you probally don't really need a 1500 coilover setup)
As for the EDFC, its defently one of the bling options that really isn't needed. How hard is it to go outside your car, and twist 4 knobs 3clicks. Takes less then a minute.
As for T-I.nets whole unless you go flex, its a waste is bullshit. I have Tein HA's (basicly the USDM SS's with stiffer spring rates and valving) I have tracked them and autocrossed them for 2 years now and never had a problem. They handle great, I have yet to have a problem with them failing, and the whole rust issue can be eliminated if you coat the threads of the coilovers with antiseize. I have had mine for 2 years in Michigan's salty winters with zero rust on them. Other members here have also tracked their HA's with zero problems. member/mod b16 tracks his sol a shit load more then me and has also had zero problems.
Also, what is your overall setup. What size sway bar do you have? Where do you drive this. How much track time do you have?
If you have never been to a track before, either of the coilovers you listed are extreme overkill. Even if you track yours every once in a while, it still is a waste of money. Track time + alright coilovers >>>> Expensive coilovers with zero tracktime
Think about it, omni power coilovers have had great reviews from daily drivers to track whores and are only 700. Your choice is about double that. So for the extra $700, you can either get some bling bling coilovers that you probally will barely feel the diffrence compared to a slightly lowergrade set, or spend that money towards track time (700/$70 per day =20+ hours of track time) Trust me, track time will get you around a track a hell of alot faster then some really expensive coilovers