After all the crazy hype and social media postings of hour long line-ups, I decided to try Uncle Tetsu's a couple of years after they've opened.
I purchased the Honey Madeline's (buy 3 get 1 free) and also purchased 1 Uncle Tetsu's Cheesecake.
The Honey Madeline's were a disappointment for me. There's nothing particular wrong with it per say - I just found it quite bland and lack of moisture. It's definitely edible... but just not something I would ever wait in line for (even though it was only a 5 minute line up).
The Cheesecake was quite delicious. Moisture was perfect and the taste was light and not overpowering. You can leave the cheesecake out without refrigeration for 24-36 hours and I would strongly suggest you do that, rather than put it in the fridge. ONCE you put it in the fridge, it will not return to it's natural softness/moisture.
I would get the cheesecake again for the $9.00. I would pass on the Madeline's... even if they were free.
The experience of lining up and watching them make/back and package the cakes were a mini experience in itself. If you have some time on your hands and happen to walk by when there isn't a 30 minute lineup... it's quite a good adventure.