I bought a Jay's CD3 Mk III a few months ago and I highly recommend it. It's massively well built and a pleasure to use. I have compared it to my Marantz KI Ruby SACD player's transport into my Berkeley Alpha Reference 2 DAC and I can't hear much difference. They both sound great. I think I can hear a slight improvement in soundstage when I use the 4X oversampling but it's very subtle.
I've got a Teac 701 on order from Music Direct. They show it as on backorder but I believe that Teac is not yet shipping this unit and I don't know when it will be available.
Why would I want a Teac transport as well as the Jay's audio? It turns out that the CD3 has a characteristic that is a downside for my situation. I collect HDCDs (the Alpha DAC decodes them) but the CD3 doesn't play them. It apparently uses dither on the first bit where the HDCD instructions are encoded. If you read the Stereophile review they note that the transport uses dither which is unusual. When you turn on the 4X oversampling it uses all the bits but that doesn't work for HDCD.