I would say chaos moshpit demolition. The matches are 10 minutes or less but you can consistently throw up 25-50 kill games. More than once I've come in on round 2, grabbed ~30 kills and helped my team push to overtime. Actually the instance I'm thinking of I got 6 plants at 200pts per and 300 for each of the two detonation. Nevermind the "killed attacker/defender" and etc score.
I say chaos moshpit because in regular demolition people have parties and specific classes. The moshpit has more n00by guys in it.
Sloooooow down. If you get it you'll regret it nucka Well did you see that red and blue? What did you think; those lights are for you