Hi Dez,
Correct!! The LB's and GSO's have the same optics, so it really comes down to portability.
Do you need to break down the scope to fit everything in your car?
Remember, you will be adding items to your observing gear over time.
E/p cases, batteries, 2 chairs one for observing and one just for sitting etc, etc.

.
A 12" solid tube will perform brilliantly, but (there's always a but

)
it is BIG, I've seen one of our club members manhandling one onto an EQ6, he's 5' 6" it's an effort.
As you've pointed out there is a price difference.
Our club has an observing night this weekend, you're most welcome to come out and see for yourself. Let me know if you're interested, we're situated in Campbelltown.
Cheers, John.