I think it's already been covered now but basically buy what you like to do the job you want. £9.99 might be okay for back garden plinking or even club plinking, who knows might even be fine for FT between 10-55yds. So long as they work and you are content the bridge between your rifle and scope is the cheapest mass produced piece of crap, no dramas. I doubt the budget brigade are the same as those seaching for the perfect pellet and refining barrel harmonics; at least I hope not!