I'd say no since the DLC Playlists aren't really populated. The maps themselves aren't very bad, but when you play the regular playlists (like big team battle) you also get alot of new community maps so there are alot of maps to play on. (even though alot of them aren't very good IMO)...
If you want the firefight maps I'd say yes since they are very good IMO but do you really want to pay 800 MS twice for 2 firefight mappacks?
[Edited on 06.02.2012 2:36 AM PDT]