Dave, I can't comment on the sound of the Teac dac you mentioned, but to be honest, Teac are not in the same league as Vitus. Not saying Vitus is the only brand you should consider, and others I am sure will chime in. But from my experience they are doing it better than anyone else if bang for the buck & musicality matter.
Hand on heart if you're looking to buy new, I would recommend reading up on the Vitus RCD-101 if you want to improve the digital side of your system. The RCD-101 is a true balanced sacd player which has had an extensive rework to add SACD and DSD compared to the previous model, including a new heavily modified Sony SACD drive, a better power supply and better dac section which uses the same modular architecture as the Signature Series SCD-010! According to Lotushifi, the RCD-101 sounds better than the SCD-010 (which i've heard & sounds amazing). VA gear is hand-made in Denmark using some of the most sophisticated engineering i've ever seen.
Waxing lyrical perhaps, but i'm just a happy end user and have no ties/connections to VA. Good luck with your auditions!