I have one of those 12" Orion Goto Dobs, they are very nice and not too bad to move around. I do have the truss and not the solid tube though. I find the base is more cumbersome than the rest of the telescope, not so much because of weight but just awkward to comfortably pick up. The views out of it are definitely worth it however
I use mine mostly for public outreach (I don't get up to my dark site often as I'd like for more serious observing) so GoTo is pretty much needed for me so that i am not constantly re-centring. The manual versions can move quite smoothly, my previous 16" Meade Lightbridge (manual) was very easy to move and keep on target but I have not had any experience with the non-goto version.