I've recently been through the same exercise and I'm sure you will be happy with the HEQ5 Pro.
I bought the EQ6 and was quite pleased with it but like yourself I have to travel to use it as trees and buildings block my viewing at home.
The main reason that I sold it (to a member just up the road from you in Karratha) was the weight of the mount itself. The head alone weighs 16kg and the tripod another 7.5kg, sort of borderline portable, and could be tricky setting up and dismantling in the dark for this old geriatric.
The HEQ5 + tripod weighs 16kg so much more manageable, and with a payload capacity of 14kg will handle a 'scope much bigger than I ever anticipate owning.
I'm very pleased with the HEQ5 Pro and I'm sure you will be too. Good luck in finding one soon.