I keep going back to FS spec over the FS2, the rear end seams to suit me better on slippery surfaces although there is nothing in it really (just in my mind probably!), almost certainly down to me having many times more track time with the FS than the FS and I am looking forward to getting my FS2-SP.
That said when I have been running in FS2 spec I've never once "struggled", the beauty of Kyosho is the cars can be whatever you want them to with all the tuning options
