I used to love Busaba; it was a regular place for us to eat if we’d been in the office until late and didn’t want to cook at home.
I’ve been there relatively recently (about 18 months ago) and it was still a great place. Don’t be put off by the queues, it moves really quickly and if you’re a party of two, even quicker.
Food is both excellent and very keenly priced.
It’s been open now about 11 years I think and seems somehow to have maintained it’s standards. It is more of a relatively quick in and out though and the turnaround time is something the staff try to police quite actively. You share tables and benches with others, but somehow that doesn’t feel impersonal; indeed it can be a great way to meet new people.
Can’t recommend it highly enough.