For other hard lesbian action (I define "hard" as energetic action with the girls getting real into it and usually including some anal), I'd highly recommend Pure Play's Cousin Stevie's Pussy Party series, Extreme Associate's Not Another Girl Girl Movie, Evil Angel's Belladonna-directed titles, JM Productions' Violation series, Sineplex's Les Perversions, Sinsational's Lil Lezzy Prospects and Metro Interactive/Fusxion's Britney Foster-directed titles.

I own all the titles from the series you list and as far as series go, my top three are:
Girl Crazy
Dirty Girlz
Lip Lickers

Tongues and Twats has some good action but I didn't like the way it was filmed -- a bit too murky with the lighting and not enough close-ups in my opinion.

Finger Licking Good is just OK -- decent but not the hardest action.

Cloud 9 Girls is more of a glam series and I usually prefer more of a gonzo look. Again, it has decent but not the hardest action.

My favorites

Girl Crazy #2 (directed by Jonni Darkko), Girl Crazy #4 (directed by Xavier Mann) are the best of the series in my opinion based on action and cast -- not really any spitting in this series and not a lot of 69 either -- but the cast list is stellar, the production values are top notch and the action is hot and hard.

I like Dirty Girlz #2 best because it is one of Jewel's last performances and I really like the cast list. You can't really go wrong with any from the series because they are all shot and directed quite well with good production values. Again not a lot of spitting or 69 but hard lesbian action including good anal.

Both Lip Lickers #1 and #2 are good hard Euro-girl offerings. Lip Lickers #3 is out in Europe I noticed but since the American distributor is JKP (Jill Kelly Productions) which is in trouble right now, I don't expect it to be offered in the US any time soon, which is a shame. The Digital Sin series "Girls on Girls" is similar with Euro girls doing what they do best -- looking incredibly hot, acting really sexy and almost always doing anal.

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