True enough the tonkatsu was very tender. My friends and I ordered Kurobuta Rosu Katsu set which includes the tender pork Katsu with a little bit of marbling (fat), unlimited rice, shredded cabbage, miso soup and small slices of pineapple.
In terms of taste, I really can't differentiate from Yabu. I think I have to try the Unagi Katsu Set so that I can try something different. The Unagi Katsu is decadent and a bit pricey but, I've only seen it in Ginza Bairin and no other restaurant that I know of. Ginza Bairin is known for its Unagi Katsu (aside from the Rosu of course).
Ginza Bairin get full really fast, since it is a new resto and people would like to try it. I suggest you come early to get a table. Service is slow, specially for refilling drinks and the cabbage salad. I attribute this to the restaurant barely days old and the crew is still probably getting familiarized with the system.
Anyway, it's worth a try. Budget with drinks average between P450 to P1,000 per head depending on your order.