Slide-outs---tell me about them!

I have 2 slides, never had a seal leak, but did have a drive gear go on one of them, it was repaired under the extended warranty, thankfully). Even with that one problem, I wouldn't be without slides, in fact, I wish I had 3 rather than 2.
I believe that the percentage of owners who have or had problems with them are far fewer than those who have had no problems, as someone already mentioned, you only hear on here about the ones that have had a problem, no one ever starts a thread, "Hey, my Slides work great, never have a problem".