It's hard to review Uncle Tetsu because I do enjoy eating their original cheesecake very much. However the experience is always tainted by long lineups, and I do feel that it is quite pricey for what it is.
The cheesecake itself taste like a sweet sponge cake with light cream cheese flavor. It is not heavy at all and I myself can chow down a whole cake with ease and still eat a decent sized meal afterwards. It's also a crowd pleaser and you'll be the popular guy if you bring it to a party to share. And I also have to say that the carrying bag is very cute!
Overall, I would say get Uncle Tetsu's cheesecake if you want a treat and you happen to notice there is no or little line outside.