Try Muscle Fury's Designer Whey. Blends well, tastes great with lots of flavours (including banoffee pie!!) and has a massive 28gms of quality protein per serving (that's 93:100 ratio-impressive). Ony £32.99 per 5lb tub too.
Don't forget though that your best protein comes from a varied diet - eggs, chicken, turkey, fish, meat, nuts and veggie stuff like Quorn, Quinoa and Tofu. Mix it up a little for variety.