Thank you for stopping by to read mmm-yoso!!!. This post is not written by Kirk or Ed (from Yuma). Cathy is polite and eats any thing anywhere when friends invite her out.
I've heard the stories, read the 'reviews' and ordered carefully a few Tuesdays ago when client-friends invited me to dinner. It seems a lot of people think Sushi Deli 3 is a loud place, with customers mainly of the younger/college age crowd, serving lesser quality fish in the (five menu pages of) rolls with corresponding low prices.
Most of that above statement is true. Being (probably) the oldest person in the room, not looking for a date and not drinking alcohol because I drove myself gave me an advantage in being able to order what I wanted (reading the whole menu) and not worry about any sort of social interaction other than with my friends; the televisions on the other side of the room were muted. [Above is a photo taken on a Sunday. You can tell this is not a weekday because there are empty parking spaces on the street- East of Convoy, a block from the Costco Business Center. The day I met my friends, we found out you can't even be put on the wait list until all members of the party are present. We waited about 30 minutes for a table that day.] 
Since I was not paying, I was polite and ordered the "July Special Bento" ($5.99) which included a very nice miso soup, chicken karaage, tempura vegetables, salad, four pieces of California roll and a heck of a lot of rice. The roll contained *real* crabmeat, not 'krab'. Everything was quite good, fresh, properly fried and plentiful. I was not disappointed. 
Unafraid to bring The Mister here, we decided to try a bit more of the menu. Above, hot tea (no charge) and a pint of Shock Top ($3). 
We were seated in a creatively decorated air conditioned room toward the back of the building. It was fun to check out the decor and not have to talk business, listen to loud music or a television. 
The Mister ordered a calamari salad ($5.99). This was served in a VERY large bowl with mixed lettuces, shredded cabbage and carrots on the bottom, cucumbers and tomato and a cup of nice vinegar based salad dressing along with a large amount of perfectly fried, crispy and non-greasy calamari rings. 
The seaweed poke salad with yellowtail ($7.50) was a bit different than I'm used to- it was a non- marinated poke/sauce placed over the raw fish, but very good. The fish was fresh, plenty and tasty and the sauce had a nice 'bite' and was not overpowering. (For $1 less, you can get a lettuce and seaweed salad, which appears larger because of the lettuce, but has less fish and less avocado). 
A side order of tempura ($3.99). Again, perfectly fried, lightly battered and consisting of one piece of 'krab', one chicken breast tender, one shrimp, two broccoli pieces and two sweet potato pieces. This could be a meal for me.
The last item to arrive at our table were these un-artfully displayed pan fried gyoza ($2.99), which were very tasty and pork filled with very little filler. I'm glad we ordered these; presentation isn't everything.
All in all, I can see why the younger crowd dominates; the prices are low for the amount of food served, which is prepared quite well and the beer on tap selection is good.
Sushi Deli 3 7986 Armour Street San Diego 92111 (858)292-5515 Open Mon-Thurs 11:30-2:30 , 5-9 Fri 11:30-2:30, 4-10, Sat 12-10, Sun 12-9 Website The menu is interesting to read in that there are all sorts of additional charges if you want to make substitutions in your selections.