I don't have any experience with the Eastman uke, but they've been able to establish a reputation for themselves as producing high quality stringed instruments from China. Not just good value for the price, like brands like Enya and Caramel, but actually high quality instruments.
I have never played an Eastman Ukulele, but I own an Eastman mandolin, as does my son Clayton, and my brother Gary owns an Eastman guitar. All of these are beautiful instruments. My MD605 mandolin Clay's MD515 mandolin Gary's E20SS guitar
I realize the OP is asking about the tenor, but I just picked up the Eastman soprano used on eBay for a steal and it’s a really nice little uke. Lightweight, fine woods, nicely built, good finish, accurate intonation. The tone is warm and full (for a soprano) with the right amount of bark when you dig in and good volume. I’m not sure that I would have been willing to pay full retail price for a new one (more than double what I paid), but it is a quality instrument.