Strut Tower Braces

I have a 1997 Grand Prix GTP. I have been thinking about putting on a set of front and rear Strut Tower Braces. My questions are,1 Do they make a good difference or would I be better off putting my money into other options. And second whitch should I use if any? 3800Performance sells theres for nearly $300 and zzperformance sells theres for around $150. Any Thoughts on this

I have a front strut tower brace from ZZP. Its black, brand new never installed, I'll sell it for 60.00 Shipped. It was purchased by mistake.

I have the same one on my GTP. Seems to really whip around corners. I can do figure 8's in the chruch parking lot on pavement like nobody's business.