Good but not the best

I picked up my iCN-520 on a trip to Scotland and return to the US with it. I bought the US maps and loaded them up. I found that the US maps (Teleatlas.com) are out of date. The maps I bought in Apr. 2006 are from 2004. So there are a lot of missing streets. I find it hard to find a street to navigate too. The street don't show up in the database when you are looking them up, but you can find them on the map. Its good but not the best. I think there needs better software support that the user can get for free. Poor Navman support. I do like Navman and hope they will write better software for the iCN-520