OK, now that we finally have some traffic in this forum, maybe we can get a good discussion of the pros and cons of the poly race seats vs. the aluminum Kirkey style seats. I can see where the aluminum seats can be more form fitted to a person and most likely they are more structurally sound (don't flex as much) but what other advantages and disadvantages are there? Obviously there is a big cost difference but hopefully that wouldn't be the only deciding factor. Don't be shy, please share experiences and opinions.