having a few of these toys now i can say that for ease of use the astrotrac and the polarie are equal. As for fitting the purpose that you want - the polarie doesnt take up much room but you cant use a lens like a 135 - 200 etc but for the smaller wide fields - its perfect. the astrotrac will handle the larger lens and the smaller ones - but your limited to a 1h45 window. not so with the polarie. the next step up for payload capacity is the starlapse - but that means you need a better tripod. for simplicity get the polarie. and for what it is worth you do get the quality you pay for - been there several times on cheaper items. but there are some rough diamonds out there
