Not meaning to broadcast anymore negative waves - But:
Most of the Garmin nuvi devices come in one of 3 configurations.
I'll use the 1390 for example, cause that's what I have.
There's the 1390 -
Then the 1390LM (LM = Lifetime Maps)
And the 1390LMT (LMT = Lifetime Maps and Traffic)
The 1390 is a bit cheaper than the 1390LMT, but the map updates are fairly expensive (IMHO) and the LM or LMT versions pay for themselves very quickly (new maps are issued quarterly and are $50 each - or like $90 for lifetime map upgrades). The 1300 and 1300LMT can be had for about the same price with a bit of shopping, btw.
As an added bonus - If you report a registered unit as stolen, Garmin will notify you if it ever comes online (via the internet) again and will also render it inop