I have a familiarity only with the TEAC through knowing individuals who have been steering themselves through Digital Sources for many many years, with slightly different concerns for what a Digital Source is able to offer.
The Individual who has recently adopted the TEAC 701T has abandoned Analogue as Source many many years past and investigated extensively what the Digital Source is capable off in their system. I feel confident to say for them, they are looking at the 701T as a Last Purchase in relation to Transports.
The same individual loaned the 701T to a friend who shares similarities in their interest in a Digital Source and had created numerous permutations, from CD Replays and Streamed Content.
When the loaned 701T was added to the alternate system, the system owner was met with something quite unexpected, the Transport replaying same Tracks as was able to Streamed, had shown itself to be very very attractive and a model was purchased.
The newest 701T Owner was smitten with TEAC and went off on a tangent purchasing the TEAC UD-701N.
The 701N has won over the new owner, they can't sat enough good things about it, for this I am also grateful, as a Steaming Source will be on my list in a few years and I can't see needing more that a 701N as a used purchase not meeting my needs.
The two individuals carried on with their investigations and come to the conclusion there is not too much to be found separating TEAC UD-701N and the Esoteric alternative.
For the PSA PWT I am very familiar with this Transport, and when using with a Commission Built Valve DAC with a COAX Connection using D.U.C.C Wire as the Signal Wire, I have never looked back. This marriage is very attractive to my needs, it has also made me Transport Curious, but to date, I have not compared anything as an alternative to be considered as a purchase.
My DAC shares similar Valves as the EAR Acute and the Acute has been compared on a few occasions, where Vintage Valves are used from the same Brand and Production era in both.
The Acute an my own Source is compared to other Digital Sources, such as Linn and Wadia and both Valve Sources stand out as quite a special performers.
The Acute is offering much more in functions than a PSA PWT is able to.
The PWT is the cheapest option, and research will show there are designs in place outside of using a service from PSA to keep the device functioning for quite an extended period.
I'm not able to help you with a decision to be made, Used vs New, Olden Tech vs Cutting Edge Tech, Brand Reputation all make the idea of a purchase require navigation. I do feel confident if any device from the above is on your shortlist as a Solely a Digital Source or a unit within a assembly for a Source, there is a lot of satisfying musical encounters to be had.