It's really hard to find a good, honest BDSM romance to begin with- but this series had it from the beginning. It's true to lifestyle done right, it's thoughtfully done, and it's real- right down to the constant consent confirmation a good Dom gives their partner and the genuine affection and aftercare.
It's even harder to find a good m/m romance that doesn't take away the masculinity of either partner or making one partner a complete doormat. Both Len and Alby are real, honest people, with flaws and all. Their partnership is a good balance of snark and sweet, attitude and affection.
I loved this series, and impatiently waited for this last book to hit so I could review. I love it, it's on my Most Recommended list, and for what it's worth, it's slated to be part of my Slightly Sloshed Reviews that I do for my friends entertainment on Facebook.