I’ve recently sold my XTs, but I’ve kept my Deores. They’re both great, and there are minor differences in features and build quality, but to me, not worth the price gap. The Deore 596 is one of the best value bits of kit on the market.
I bought some Deore 596’s from Kimbers off here a couple of weeks ago, from a new bike, used once or twice. £60 posted and they are amazing. I have M675 SLX’s on my other bike and there’s next to no difference in performance.
I’ve just got Deore on a new bike. As a long time Hope fan I was very tempted to change them at the weekend as the Halfords deal was so good but couldn’t justify it as the Deore’s are worth nowt second hand but work so well. Very happy with them.