I like BJ movies and I have to admit that Asfur movies aren't the most interesting. First, the dudes are amateurs most of time, so small dicks are on screen 95% of the time. Even Yuuno Hoshi or Miki Sunohara (not seen Nonomiya Misato's Asfur movie yet) Asfur movies aren't really fun to watch, despite their skills.
I can suggest you the "Ultra Blowjob Cum Swallowing Heaven", "Girls Who Like Cock Shabu Shabu" and the "Demon Fellatio Hell" from Real Works. I don't think you can go wrong with any of the titles released in those series. My favorites are :
REAL-640, XRW-197, XRW-257, EMU-046, EMU-033, EMU-080.
I will soon watch XRW-187, as Minami caught my attention recently.
S1 has a new (?) series "The Dick-Loving Maid Who Instantly Sucks". I highly recommend SNIS-854 with Arina Hashimoto. There are sex scenes too in this series.
Fitch has the "A Deep And Rich Blowjob Salon" series, but it's disppointing to me. I saw 2 or 3 movies, and I always deleted them after.
Slut Heaven has some good titles. My favorite is CJOD-013 with Nozomi Tanihara.
Last but not least, Idea Pocket has also good BJ movies. The beautiful Akari Maejima does all. Same as S1, there are sex scenes included, but Akari's movies have big BJ parts.