Ive got a pair of Barr and Stroud 10x42 Sahara, which cost about that. Theyre very good for the money.
Bushnell H2O's have my vote. Great quality.
I've lost my Opticon when I moved house ... probably in a box somewhere .....I see a shop in Swindon sell the viking range.
You really are better to try before you buy and as Colin infers, an 8x mag is much easier to use.
Opticron are a trusted make too.