I see lifetime maps as a gimmick. For me the lifespan of most tech products is about 4 years max before it is time to upgrade. 4 years is an eternity in tech time, there has been 5 generations of iPhones released in the last 4 years. I don't know about Sweden, but where I live there is very little as far as actual new roads being built over the course of 4 years. Even if there is a new road the GPS will still get you there by an alternate route. You are not going to actually use this for your lifetime or even for 10 years so the "lifetime" in lifetime maps is really just a few years.

I would be more worried about traffic functions.