I was considering purchasing a set. Have any of my fellow forum members installed tall spindles. If so opinions appreciated.

If your 1st priority is to improve handling and lower ride height you want ATS spindles.
http://store.nexternal.com/shared/StoreFront/default.asp?CS=ats&StoreType=BtoC&Count1=882320582&Count2=799461007 click on suspension to get to the spindles - they are not cheap but you get what you pay for!
If all your looking to do is lower ride height cut the springs. Do a search on dropped spindles - for the most part they are a horror show and create more problems then they solve.