I've been to Toshi's five or six times, and I've never been disappointed.
As everyone points out, there is usually a line up, so the best idea is to get there at around 4:40 to be seated for 5, or come on the hour after that. People complain about the rules, but they are clearly posted and understandable. This is a restaurant that is open for only 5 hours a day, 5 days a week. They rely on quick turnover for their business. They're not going to let you save one of their very few tables for the rest of your party who may not show up for an hour. That is revenue lost. And, as someone else pointed out, it's not fair for people whose full parties stood out in the cold/rain/heat.
The service is always fine here. The waitresses are pleasant, but this isn't a place like Earls or Cactus Club where the servers go out of their way to charm their tips out of your wallet. I've never had any problems with the service. It's always fast and professional; no wrong orders, no rudeness. The previous reviews have said that the sushi chefs are stern-faced, which is true, but they are extremely busy. They work quickly and efficiently. However, we've spoken with them on a couple of occasions, and they seem very pleasant. A couple of them don't speak English very well, which might explain why people have difficulty.
The food is excellent. To be honest, I don't normally like sushi very much, but since coming to Toshi's, I've been able to eat much more of it than I ever thought I would. The freshness makes all the difference. My husband loves the tako, unagi, and some of their more exotic rolls. I usually stick with the california roll and teriyaki chicken, with the occasional bite of his food. Everything there is very fresh, and the sushi is made right in front of your eyes.
I think this restaurant is fabulous, but if you're the kind of person that doesn't understand that the restaurant has rules and you expect to be treated like a king or queen just because you're paying them $20 for food, I'd recommend you consider going to Cactus instead.