Where will you primarily use it? I've got a 94 Winnebago. Second owner. Garage kept and all major systems replaced prior to my buying. I've still spent a couple thou (not including the 38' carport to keep it in. I'd drive it anywhere, but for trips of 3 days or less, it's still cheaper to stay in a hotel. Allegro has a good reputation as a solid RV. 28' is a great size for in town maneuverability. You'll be avoiding a lot of problems with no slides and the floorplan of this is comfortable (almost identical to mine

). Water intrusion ruins most of these things prematurely, so my advice would be to get up on the roof and look for potential leaks, then go inside to make sure there's no evidence, then check the sidewall panels outside for any signs of delamination. Spend some time surfing the RV websites. iRV2 is a good one.
BTW, I've been doing this since the 70's, following in the footsteps of my Tin Can Tourist parents (40s). They can be a whole lot of fun. Don't let a few minor repairs scare you off, repairs are needed in the newest RVs. I had some friends who spent 1.5 mil on theirs and it spent more time in the shop than mine ever did.