I have that unit and I can't say I'm impressed with Lowrance's support. The unit itself is very nice, but you can not convert map files from other sources to work with it. You are stuck with what Lowrance will lower themselves to sell you.
There is a file conversion utility for Garmin and Magellan GPS's. Lowrance uses a proprietary file format that no one has yet cracked and the primary conversion utility code writer has no intent to even try. When I called Lowrance about this they essentially said "tough" and were arrogant about why I would want more than they provide. I'm happy with the unit, but I am thoroughly pissed at Lowrance and I tell anyone who asks why.
So if the maps Lowrance supplies are good enough for you then it's great unit. If you want to go to Baja, the supplied map detail is pitifull with no remedy.
Were it me I would look for an older 2400 which I believe can have other map files uploaded to it. If it has had it's OS upgraded to 6.0 or later you can't do that.
TS
I used swerve around my halucinations, now I drive right thru them.