Dear fighting game fans in the Giant Bomb forums
In my personal opinion, the best fighting game franchises of all time are Guilty Gear and BlazBlue because of featuring their gameplay style, the roster of playable characters, stages, and soundtracks I prefer the most, I have been fanboying these two for a long time, however, there are some villain characters that I dislike such as Azrael, Yuki Terumi, etc. Because they're appearing to be way too awful in terms of personality.
So from my experience with other fighting game IPs like Super Smash Bros, PlayStation All-Stars Battle Royale, Tekken, Street Fighter, Mortal Kombat and many others, I personally don't like them anymore because their gameplay style doesn't suit me, but Melty Blood and Under Night In-Birth are both okay in my personal opinion.
Edit: Sorry for my fanboyism on the Guilty Gear and BlazBlue series.