The Secret Armory of General Knoxx feels like one big long apology for Mad Moxxi's Underdome. I'm about two or three hours in and the jump in quality of things to do from Underdome to this is huge. It's almost enough to wash the bad taste out of my mouth for wasting 18 hours beating 20 rounds in all three arenas and getting absolutely nothing to show for it. I can almost picture it now . . .  
 
Gearbox: "We're really sorry about Underdome. Really, REALLY sorry. How about new vehicles? And guns? And now you can actually meet Moxxi and do fun things with her. Oh! How about a level cap increase? We'll even bring back Scooter (Catch-a-Ride!). There are even a bunch of highways so you can cruise to Judas Priest or Tom Cochrine or whatever. We even put in 50% more Fifth Element refrences and don't forget to check out the world's biggest bullet! Enjoy! 
 
P.S: We're really sorry about wasting your time with Underdome. But that item bank was pretty sweet, huh?" 
  
I haven't beaten it yet but it's looking good to hold a constant vibe of awesome through the whole thing. I'm a little cautious. For me, Moxxi's Underdome started out pretty sweet before taking a swan dive into absolute frustration. I don't know how I feel about the huge highways yet. It's kind of a bummer that there is no quick travel in General Knoxx. The fastest ride you can get flips really easily, (even when you turn just a tiny bit) I've already pulled a barrel roll without trying so Peppy would be proud. There's another thing that General Knoxx DLC seems to chug. Texture pop up is really bad in the main hub. I'm hoping that issue will work itself out. Until then, Secret Armory is pretty impressive, even by Zombie Island standards. Bonus points that I haven't seen any reskinned areas like Dead Haven yet. 
 
"That's what she said! High five! *Cough* Ahem."