I have a SW 120ED, but I do not consider it to be a G&G, or at least not a really easy one. So I am considering perhaps getting a small ED refractor such as the AT60ED or AT72EDII sometime in the future. I know the reviews for both of these are real good, and the opinions are usually that these are a good bang for the buck. Obviously they are small and have their limitations, and yet can provide unique challenges to find out what can really be found or seen using an aperture limited scope and one's own eyes. And of course they are true G&G's by anyone's definition, and thus easy to take out when limited by time or seeing (or not), but yet still want to look at a few things. So I have a couple of questions:
1) Obviously the 72mm has 44% more light gathering power, and two rings and a dovetail vs. one ring and foot of the 60mm, to its advantage. However, I have gotten the impression from reading extended posts that the 72mm may have a little more in terms of aberrations compared to the 60mm. Or am I misinterpreting?
2) If I were to get one of these, do you have a recommendation for an alt-atz mount with slo-mo controls (which I would prefer it to have)?