We have a two slide coach and it is unlikely we would ever have a non-slide coach. Our slides are after market and were mfg. by HWH who by the way give great support. The only problem we have encountered is a failed switch which we were able to jump( this in over three years of use) I view the slides as a desirable option ( like any other option/sytem) and the attendant maintenance as a small price to pay( so far)