The HP potential of stealth vs. 906 can and has been debated to great length. Some situations simply don't warrant extra effort or $$$ for better flow numbers (I don't know the particulars of your engine build, so that may or may not apply to you) BUT, the weight savings is REAL, and its real for all situations--less so for some 4500# + luxo barge.

Weight saving is arguably better than increased power output because less weight means faster acceleration, faster deceleration, better handling, and more mpg. More power USUALLY only equates to faster acceleration.

To me, it doesn't make sense to spend similar money on heads and ignore the weight advantage. Its there waiting for you....take it.

And after all, its not like the Stealth option is likely to make LESS power!!!