I’ve had a Portax LK for four years— really like it. The windows and groom doors on mine were not watertight, though. And the Velcro holding up the little piece of the storm flap to expose the screen failed after about a year. They do make a full screen version. If you are ordering new, consider having hooks and bridle brackets added to the tack compartment; it was a bit of a pain to add myself. The chest and butt bars were not sufficiently padded for my taste; easily fixed with yoga mats and duct tape. I only had to have routine maintenance done and one brake cable replaced, which were done by a mobile service and also a local-ish trailer shop. The original tires it that came with (new) started to delaminate— you may want to just go ahead and replace them.
Ironically I’ve just ordered a Hawk (Balanced Ride)— how did you like yours? Anything that didn’t hold up or that you would have ordered differently?