buy this over a week back and have be test drive it everyday . as other people have comment , it lock on very fast - from a cold start to `` Ready for Navigation '' , it take I approximately 30-40 sec but after that its pretty smooth . for the price that it be currently available on Amazon for - you cant beat it . I have be research for a GPS unit in this price range from a long time and have shortlist this one and the Navigon 5100 . people who be on the lookout for a gp should consider that one also . a few quirk i observe on the 350 : 1 . map seem to be a little off in some mall \/ densely populated area - again this might be a problem with every other GPS too . 2 . a major one for I be the lack of a qwerty touch key pad . this mean that you have to use a keypad design a , b , c , d etc etc to type out city and state - this be extremely slow . I google this issue and find a lot of people notice and report this - unfortunately there be no known resolution and Garmin have choose to ignore the problem . 3 . can not type in a city by a postal code - though the manual mention this , i have try unsuccessfully to put in one and cant get it to work - i think this gp lack the ability to do this . but all in all a very satisfactory purchase that will fit in you pocket : -rrb-