Buying from a dealer of a different brand

CRV is a pretty good reliable vehicle. Have it inspected by a qualified mechanic before you buy, just like Tom suggested.

You can still buy an extended warranty if you want one.

Buying a used car from a non manufacturer dealer is ok! However it is still better to buy one from a dealer who is more familiar with it and would service it correctly using only oem parts. It may be a little less expensive in the short run. However, In the long run it may end up costing you more in repairs and upkeep.