I have had an vista hcx for about a month.. I would recommend getting the extra storage of the micro sd card, 1gb is fine, 2gb is max..

The best advice I received was when looking at the extra maps for the gps, the basemaps are very basic and have very little detail..

Get the 2008 topo maps, they include all roads and trails for north america.. The Navigator maps have lots of extra details, like points of interest, gas station, motels, starbucks, etc.. More detail than I needed..

The mounting of the hcx is very easy.. It comes with a external adapter in the box and all you need is the rail handlebar mount, the 1 inch is for most standard road or mountain handlebars... I found mine on ebay..

http://search.ebay.com/search/search...fsoo%3D1&fgtp=