I own the GS 10 inch dob myself.
1: i use a trolley/hand truck to wheel around my dob in one piece at home. When travelling after removing the springs the ota lifts off the base. Splitting the dob into two pieces makes it much easier to transport. I think dissasembling the Saxn dob will be a bit more of a chore.
2:There will be a small subtle difference in brightness which you may or may not notice, and a big difference in weight and portability.
3:Either of these dobs can be easily improved in relation to their alt-az motions. As standard the motions can be a bit sticky, causing overshooting of the target.
4: Reading charts and starhopping is an acquired skill which just takes a little bit of practise. If you never learn these skills what will you do if your batteries go flat in the field or suffer an equipment malfunction.
5: I doubt it very much. The 10 inch will fit into most medium sized cars.
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