I currently own the 3451 and am very happy with it. Its a bit on the tall side sitting at 13 ft 6 inches however it tows very nicely. Its a great value for the price and is very comfortable. My wife and I opted for this model because it was the only model we could tow in our weight limits with my 2006 F350 SRW that had the seperate garage and could accomodate a 4 seater razor. As far as the slide, I have had no issues and have used my trailer alot in the past year and a half. I highly recommend getting the optional AC in thebed room and garage. Its really helps out in the hot weather. I am 6ft 4 inches and can stand up in the bed room and have room to walk around the bed, I upgraded the **** matress with a tempur pedic and sleep like a baby. The only two issues I have had with my Trailer is the awning separated from the coach slighlty and the sani flush system leaked. Both items fixed under waurentee at Richardsons with questions asked. My family and Love this trailer and do not regret owning it. I hope this helps and hope you enjoy yours as much as we have enjoyed ours.
