Hi Ross,
to IIS.
If you stick to a 10", either a solid tube or truss type will be ok.
If you want a 12", I would highly recommend that you purchase a truss or strut type, like the Lightbridge or Skywatcher.
If the 12" is to stay in one place, a solid tube will be ok, but if you will be transporting it, the size and weight will be against it.
I own a 12" lightbridge, it's 3 main sections makes it easy to setup and pulldown as well as transport. I've seen too many friends battle with the physical size and weight of the solid 12".
The solid tube's main advantage is the price, approx $300 cheaper.....