Thinking about selling my 417 to a friend and getting a 417X. 98% of the time I run 21.5 on carpet. From comments here going to the X probably wouldn't be wise but I wonder if it would be fine since our carpet is medium bite at best (usually low). I guess my thoughts are since it is just 21.5 (used to be boosted but now blinky) and low bite carpet the 417X should be at least as good on carpet. Your thoughts?