Since Bungie updated their site and completely screwed up their forums, I’m going to post here from now on. I would have to say Zealot is my favorite map in Reach. Although when the game first launched, the camping was horrible.
Imma go with asphalt! Lots of fun and I rarely have a bad game on that map even if I lose or don’t perform too well 
Lots of vehicles, explosions, sword fights(!) and fun!
Breakpoint and Highlands.
Too bad 343 removed the DLC playlist 
.
Hemorrhage yeah it was over played but still that classic map was still a blast
Imago for competetive play. Asphalt for big team. Renova for casual games.
Boneyard. So many times I’ve accidentally betrayed people in that map and got booted
Sword Base, Sword Base, aaaaaannnd Sword Base.
Of course, if we’re including DLC, Highlands.
> Sword Base, Sword Base, aaaaaannnd Sword Base.
>
> Of course, if we’re including DLC, Highlands.
Same here. I’m pretty happy on most all the campaign-based TS maps, but Sword Base is where it’s at.
For competitive play: mlg sanctuary v7, mlg pit v7, mlg nexus v7, Countdown (mlg v7 and snipers), Zealot (mlg v7 and snipers)
For standard slayer: Imago, Pulse, Zealot, Synapse
And for BTB: Trident
I stinking love countdown. Just an amazing symmetrical map with tons of memories of super close super competitive SWAT, Double Team, and team slayer games. Along with great games of infection and king of the hill. Love that map.
As for DLC, I LOVE every one of them. Truly. They’re such great maps but they’re never available…stinks.
All time favorite
-Countdown
Playlist specific:
Invasion - Boneyard
CTF-Highlands
Oddball - Zealot (not Arena Zealot)
It’s really hard to choose. But basically I like almost all Reach maps, it’s just that some are more exceptional than others.
Sword base. Grav lift feeds.
Another vote for Sword Base here.
Powerhouse
Perfect Halo map in my opinion.
If we’re including DLC, I love the Anniversary Map Pack. I could play on Penance all day.
Sword Base FTW.