The Trek is a great unit - we love ours. Check out Trek Tracks for all kinds of info on Treks. All the Trek brochures are available on the website.
Treks are great because of the quality of the coach and the roominess. We have a 2003 Model 2830 with the 8.1 Chev on Workhorse chassis. We get the living space of a 38 foot coach in a 29 foot package because we don't tow a bedroom behind us. Bed is in the ceiling and comes down at night and goes up out of the way during the day. If you can live with the bed, you will love the Trek.
2430 is the smallest of the Treks, but we have many friends who are quite happy with the size. 2430 has the smaller bathroom and the dinette in the kitchen area. 2830 has the large bathroom and bigger kitchen.
Mechanically, Workhorse with Chev should be a good unit. I believe 2430 does not have Autopark. See if there have been some suspension upgrades. Check the usual mechanical stuff: engine, tires, batteries, etc.
Think about where you like to camp and the floor plan that fits you.
Treks are great for boondocking, USFS and COE parks, state parks, and national park campgrounds. Luxury and roominess are Trek hallmarks.
2003 Monaco Safari Trek 2810
Coos Bay, Oregon