I love Lancome's Bi-Facil (£21) and I have gone through numerous bottles of the stuff, I have even found the perfect cotton pads to use with it. I use waterproof mascara so anything without oil will have a hard time getting it off.
Recently, I picked up L'oreal's Absolute Make-up remover (£5.49) which is just as good as the Bi-Facil but for the fraction of the price. It does have more of an oily residue but I always cleanse my whole face after so it doesn't bother me anyway. The packaging isn't as nice and you do have to be careful with this one because the product does pour out much faster (I learnt the hard way), but you really can't complain for the price. The product itself is almost identical so it's definitely worth trying out L'oreal's one. Even when Bi-Facil is sold as a duo pack for £28; it is still more expensive!
If you do pick up L'oreal's Absolute Make-up remover then make sure you get the right one. I believe there is a gentle version which looks almost identical, however, that one will be a pain to use for waterproof makeup.
What is your favourite eye-makeup remover?