Though I thought the last version of the label's site was good, the latest version is really clean and engaging - a lot of photography, large type and (though not really new but useful) several ways to listen to music by way of Listen links and a Merge radio feature. The site's even built responsively which means it reacts and scales depending on your device's resolution - this makes for a consistent user experience from laptop to tablet to phone without having to download and install an app (although they do have a good mobile app).
Browsing and purchasing music on the site is also good. With browsing, the links to New Releases, Shop and a search box make it difficult to not find new stuff. In terms of purchasing (I pre-ordered Hospitality's Trouble), the overall flow is better than expected with plenty of feedback when items are added/removed from a cart, large buttons to proceed to checkout/continue shopping and a good step-by-step process.
The only area for improvement would be for wish lists. In order to add anything to a wish list, you must be logged in (sure being taken to a log in page interrupts the experience but I see why it's necessary) but when I wanted to add the upcoming reissue of Nixon's Lambchop, I was asked to log in but the album was not automatically added to the wish list. I had to start over (like the site forgot why I was logging in) and search for the album and go thru the process again.
Additionally, when I finally added Nixon to the wish list and continued browsing the site, it wasn't clear how to get back to my wish list later - there isn't any visible link to a wish list and i couldn't get there by going to the cart.
Aside from the criticisms of the wish list, it's a great site and I can't wait to see Superchunk later this month in Chicago.