To track with a dob is a piece of cake. I have one hand on the knob just under the top end of the scope and it is second nature to move it slowly as the object moves. Dont worry about tension adjustment on the dobs. it is very easy to adjust the tension. Difficult to explain but easy when seen. I highly recommend having a look through a couple of the scopes you are thinking off. The bigger dobs (10 and 12 inch) are absolute light buckets that give you the most bang for your buck. When talking about light gathering and therefore definition of objects the 12 inch takes in almost double what the 10 inch takes. If that gives you an idea.
I personally wouldnt bother with an EQ mount that wasnt driven and guided on both axis and the price of those bad boys is well beyond me. I do harbour fantasies of one day mounting my 10 inch dob on an EQ mount when i am rich and famous.
I would hate to hear that you bought a smaller scope and then looked through a large aperture dob down the track and became upset at the difference in viewing power.
Go through some posts on the site here and have a look how many people amongst the observers list a big dob in their signatures. Thats the reason that they keep selling out.
