With BL, it can often be hit and miss because of the vast stable of authors they have. So many different writing styles means that generally there's something for everyone, but can mean that your favourite faction gets written about by someone you dislike...
If you like most of the authors in the bundle, then go for it, if not maybe pick and choose the individual books you think you might like.
Personally I've read Mask of Vyle and thought it was a bit 'meh'. I wouldn't read it a second time for sure. I really enjoyed Atlas Infernal- it's protaganist is an Inquisitor, but there's lots of cool Harlie lore involved. Harlequin by Ian Watson is a classic, but is RT/2nd ed. era background, so a little dated.