You're welcome!
On the 100mm reflector, it isn't on a tripod, so the eye piece is going to be at a height suitable for a small child if you placed this scope on the ground. So to make it more confortable to use a sturdy table or similar would be required - this would detract from the portability alot.
Short tube refractor is the winner for portability, ease of use and no fuss maintenance.
Rob