I've been studying the AAT course with them and they've been great. I managed to complete level 2 and 3 within three months of enrolling. There's a wide range of resources available including their own Study Buddy, plus access to all the Osborne e-books and further tutorial videos from Kaplan. It really does feel like I've access to all the study material I would ever need. They've also been very quick to email back when I've needed help and advice. The fact that it is a subscription service is a great plus too. It's worked out far cheaper than paying £600+ that some of the other providers are charging for each level. I would wholeheartedly recommend them.