The seats themselves are comfortable, and the service is good.

The downside is that the spacing between you and the seat in front is almost non-existent. When the row in front is fully reclined, the only way for the window seat passenger to shimmy past their aisle neighbor is via a kind of lap dance maneuver. Not that I'd know anything about that of course.

The upside is that this can be a great way to get to know your neighbor...

Overall, I'd say it's way superior to WTP, just plan your bathroom trips in advance.