Are Aerial 10T's still considered a Good speaker on 2018?

Are Aerial 10T's still considered a Good speaker on 2018?

No!

IMO it depends on what a steal of a deal it is..Hard to remember exactly my thoughts on them as its been so long ago but the 20T was a major advance.I think Id wait for a "steal of a deal" on the 20ts

Listening to my 10t’s as I’m writing this. Original owner and have always loved them. Bought Merlin VSM because the 10t’s overwhelmed my main listening room. Too small 15x15 with vaulted ceiling and a clearstory. They love my 23x27x8 workshop driven by my equally old Bryson 4B. Source is an Auralic Aries Mini with a LPS directly driving the amp. Very happy and amazed by the synergism.  Buy ‘me quick

I think Id wait for a "steal of a deal" on the 20ts

That steal of a deal may probably be good for flippin' but factually for casual residential living room 10t will do better job no doubt unless it's a huge loft. My 10t are in 20x20room.

Michael Kelly is currently working on the 25T. Should out sometime this year.