From personal experience with Taipan and Stealth (and from what I've heard about the Blade), the performance and workmanship of each are exceptional.

In US dollars, prices for the base F16 sloop version of each is, to the best of my knowledge:

Taipan $15,503 (current price)
Stealth 13,991 (current price)
Blade 12,500 (this quote is a few months old)

***The prices do not include shipping, port fees, taxes/customs, etc.

For what it's worth, the Spitfire shouldn't be forgotten as it is obviously a very competetive boat. At last check it was priced above the rest.