Ok as above

I have a set of Sti5 Springs to go on my MY00 UK, now question is, do I fit those, or do I buy the eibachs that the dealer has offered me for a good price

I need to know soon, which are the better ones, bearing in mind the STi5 ones didnt cost too much, and I would have to sell them on, and the Eibachs will be an additional 125 quid