The base is a limited with lower trim. Drive train and most else is the same. Most of the lesser trim can be seen from in and on the cockpit seat. Base seats are cloth. There will be a little more plastic showing. Outside the base will not have the brushed window trim. You lose seat heater (which breaks anyway) and the passenger seat may not be power (If this is not true someone will yell and straighten this point out soon enough). Only those of us that have one can really tell, and as was mentioned, we don't care.

Shoot for the best maintained, lowest mileage one you can afford and join the club.