I've had both trailers and as pointed out by others environmentally the trailers are the same. Now that the SE Safari is available you can get the big Classic rivet windows. Some other items to consider, the Classic's may have bigger holding tanks when comparing against same size Safari's. Other ammenities in Classics like electric/gas water heaters, black water rinse valve, upscale toilet, better thermostat that controls heating and cooling, sofa is higher in quality, inside window treatments are usually curtains and dual mode shades, counter tops are higher grade, water filter built into kitchen faucet, entry steps higher quality, two fantasic fans standard, spare tire carrier standard, glass shower door, and awnings all around. Those are the immediate items that come to mind.
'04 Classic 30' S.O.,'03 GMC Savana 2500,'14 Honda CTX 700