I have not had any of the problems with the plastic or optional aluminum shocks that you or some others have had, I'm not here to candy coat anything, or discount your experience, I provide input to Vaterra to improve products and help end users get better results.
I don't find the optional aluminum shocks over-rated at all (or over priced, look around at other all aluminum RC shocks), mine (and several other NorCal buddy's) have been great, smoother than plastic and didn't need drilled out pistons. I'm running AE 30wt in mine, shocks squeeze tested in hand and crawling is noticeably smoother to me, YMMV
"thumbsup"