I purchased the "entry level" 5th wheel noted in my signature line in August 2012. Dealer (shout out to Franklin's Big Country RV Outlet in Abilene, TX) and Keystone took care of an issue with the nose of the trailer in the first month and since then, no other warranty issues or failures. We've had it out every month since purchasing, averaging 32 nights each year, currently spending a week at Caddo Lake State Park in Texas.
I'd call that reliable, 100% satisfied with the purchase. I know there will come a time to replace her (Persistence!), but DW and I are so happy with what we have, can't yet foresee when we'll venture back in the market for a replacement.
2013 Silverado 3500HD - Duramax/Allison - CC, long bed, SRW, 2WD
2017 Grand Design Reflection 303RLS - TST 507 TPMS