Hi Erick,
thanks for the reply.
As yet I dont know anything about those two scopes but I guess they're probably the 'Roll Royces' on the market and priced acordingly.
I don't mind tinkering myself. It's good fun but at times I've modified things to the extent that I should have really bought the 'other one' in the first place even though it was maybe 20% more expensive.
Mal