Panino Teca used to be my automatic stop for sandwiches on the weekend, but I've stopped by this place more often recently. A few comparisons.

Service
Teca - Generally ok, but no manager ever seems to be around. The staff are often messing around, punching each other etc. If they're doing that in full view of the customers, I don't want to think what goes on in the kitchen.
Giusto - Some of them have an interesting sense of humor, and they need a bit more training - starting with cutting sandwiches into 2 or 4 pieces. But at least the manager seems to be around the place quite often and looks like he cares what is going on.

Food
More or less the same, really. Big sandwiches with plenty of choice of fillings and breads, big salads, good value (Giusto is about RMB 2 cheaper on most items). Giusto does better on daily specials - pasta etc - and breakfasts.

Environment
Teca - Village one has a nice city center buzz.
Giusto - I feel it's lacking something inside, and the upstairs feels kind of empty. Maybe more music or better lighting would help.

Music
I can't remember what Giusto plays, but Panino Teca has had the same three songs on repeat for the last year, so Giusto wins. Katy f&%$*ng Perry.

I need to vary up my eating habits ...