Jane's guide is a lot more than a site with adult paysite reviews. There is a lot of content covering other adult topics such as book reviews and sex toy reviews as well as general consumer tips and other useful sections.
The adult site section is laid out slightly differently to other review sites in that it is not categorised by strictly by niche but by 'mainly pics' or 'online video'. This may suit some whilst others may find it more difficult to browse the kind of sites they want. However, there is an extensive search facility to find something specific you are looking for.
The reviews themselves are slightly disappointing in that they are relatively brief compared to some other review sites and don't always give detailed information on the site, such as numbers of movies or picture sets. These are sometimes mentioned in the review but not as a separate clear boxout. The comments in the reviews are helpful and written in an entertaining, friendly way, but there is no scoring system as such, just icons representing how good the site is. The icons are also not always self-explanatory and I had to look hard for the key.
Jane's guide is also different in that free sites are also reviewed and overall there is a lot of information available. It's a very nice looking and clear site and highly recommended. It might just not be the most extensive in its paysite reviews.