Thor or Forest River - Warranty and reputation

Best you can do with either is a complete inspection...inside, outside, under, roof...and run every system for a couple of hours at least before any money changes hands. Glad you left the used Chaparral in the rear view mirror.

My brother has owned two Forest River RVs that proved haste maker was correct. My son has a travel trailer made by the same company and it is very poorly constructed.

Thor is a publicly traded company with many divisions.Forest River is owned by Berkshire-Hathaway and also has many divisions. I have owned two Forest River units (Rockwood division)and have had very good service and few issues (none major).
I would suggest you go to the owners forums for the two units

FROG (Forest River Owners Group)FROG and look in the Coachmen sub group
and
Crossroad Owners

Many a post good and bad for these and others. Can get a better feel for the units. You can also join and post in both to get direct feedback on the models you are looking at from other owners.

I have been told that "Thor" & "Forest River" are both owned by the same "Corp" and I do know from pass experience "Forest River" is a cheap built piece of junk, I brought one brand new & had nothing but trouble, the frame was bend (from the factory) they only hooked the electric brake wires to one axle.