Get yourself a Leoupold, I have used them for over 25 years, never had a problem with any of them. I also have a Burris Signature on my 375HH, taken it to Africa and Finland, never moved, never had a problem.
Buy them from the States, the exchange rate is over $2 to £1, although you will pay import duty and Vat you will still get them delivered for half the price you will pay in the UK. Or better still find someone who is going to the States to bring one back for you.
This year I bought a VXL Leoupold for £360, price over here is close on £700. Bloody brilliant scope, I have already lost count how many deer its taken on my 25.06.
Good luck