I have Canon 10x42L, you can buy them new now for about a grand, secondhand six or seven hundred quid, how good are they, well once you use IS bins you will struggle to go back to conventional binoculars, no matter how steady your hand the IS is effectively like using a tripod, I'd love to know how much better the new gen IS bins are but the 42L's are incredible, IQ is also outstanding, I use them for macro observation (insects) right through to star gazing, the 42L are also fully waterproof unlike the rest of the range. Weight is on the heavy side as is bulk and the 42L's are not the most comfortable around, large 4.2mm exit pupil means they are fantastic in low light also, they are so good it's like looking at life in high definition! All who have tried mine have been blown away by them, the biggest downside is the price and they do like a battery or two. Buy a pair, you won't regret it.
Oh, and I'm not sponsored by Canon
but I flipping well should be!