I don't know what model of our first Garmin was but we have a 2555LMT and we haven't had any problems with that one either. The DW said she didn't think we needed the bigger screen but has since changed her mind. It has the 5" screen and split screen showing interchanges and multiple lane splits and the audible is great. The directions are great and even though it only has a female voice, we're very happy. I like the computer, mostly useless info but it is interesting to see how much delay time you experience each day.
We're not fond of the setting for secondary or non interstate roads, now that we know it's a pain and will direct us off onto city streets when passing through a small town we plan ahead.
Biggest thing for us is the 5" screen.