I find the GPS on the N810 rather too good. It can be distracting in the wonderful detail it presents while driving. So I have had nothing but enjoyment. While much of the discussion here relates to indoor use, I know where my bathroom is, and so I have never had to use it indoors in a hurry. Hence I can offer no useful comment on this aspect. Just wanted some readers to know that it is a really handy device outdoors.