I have a 2wd slash(brushed xl5 spec) and it's a blast! I brought it off eBay cheap and stuck a 2s lipo in it and was off. The handling is the big draw back as it is easy to roll but was fun to bash with and I ran it stock for about a year. I then upgraded the heck out of it with rpm parts, brushless motor, pro line wheels and tyres but the best upgrade is the LCG chassis! The chassis upgrade transformed the handling.
ebay and Internet shops are full off parts for the slash so no need to worry about spares but when mine was stock I only broke one shock absorber!