I always used Hardcore Racing Ti screws in all my cars. They are a bit more pricey buy I have yet to strip one out. The Mugen Ti screws seem to be just as good. I've tried the China brand stuff (GPM). They sucked royally. My aluminum screws were 3x stronger then them.
Remember that you don't wont to use a Ti screw in an alum. part. Like the steering post. Without anti-seize you will get Cold Fusion and may need to drill out the Ti screw head as well as replace the aluminum part. This fact is speaking from experience.