Most people on this forum are seeking help about the issues they are experiencing with their RV's, whether it's a Sanibel or some other brand. While it is true that many will experience some issues at first, usually by the end of the first year of ownership they will have all the bugs of a new camper worked out.
Performing a thorough PDI when picking up your RV, new or used, can eliminate many of those issues.
So reading the posts on this forum can seem like everyone out there is having nothing but problems with their camper. In reality a vast majority of Sanibel owners, and owners of other brands as well, are satisfied with their RV's.
Find the floorplan you like. Find a dealer you feel you can trust. Be prepared to fix a few issues during the first year and also be prepared to perform periodic preventive maintenance no matter which RV you choose.
From what I have seen and read about the Sanibel's......they are very nice!