First off, I know next to nothing about Sushi. But I do know about service and what I would expect out of a restaurant. Sumo Sushi 2 just about hits the spot, but does miss in a few areas.
To start, the area's where it does miss is in overall ambiance and location. As my friend mentioned in her review, the music was set to XM 30: Hits, which at times had rap music playing (Chingy's "Ridin' Dirty" in particular). This took away quite a bit from our mood. The other downside is the location. The sushi here is good but not spectacular; being further out on Durango, it is not worth the drive.
The food itself was good, perhaps a little exspensive but again I don't know sushi as well. We had a fried roll with cooked shrimp that was good but not spectacular.
A few things I particularly like are the sushi bar with the sports playing above it and the HUGE salt-water fish tank stocked with a wolf eel, ray and lionfish. It is worth just sitting there and having some sake to check this out.
Also, considering how close it is to my friends apartment, I will probably be going here anytime I hang out with her simply because of how convenient it is. It was particularly slow there, as well, on a Saturday night about 6pm, which is bad for them but good for us.
On Friday and Saturday they are open till 2 A.M. for your late night cravings.