I have the Sojing tenor. Fit and finish was fine, and intonation was VERY good out of the box. Paid $165 shipped on Amazon.
The problem I had was the electronics. The preamp is based on an LM386 op-amp chip, and I just hate the way that they sound. However it 'worked' fine, but just sounded bad to me.
I pulled the preamp and for a while just ran the rod piezo passively to the output jack, and used other, external preamps when needed. However, doing so, despite shielding the entire body cavity and cover with copper foil tape (which helps reject interference and certain types of hum), I could not get rid of the hum, despite even not being connected to an A/C power source at all, and no matter any combination of new cables etc (literally tried it ALL)
I ended up replacing both the pickup and preamp with the Mi-Si acoustic trio ($115 shipped from Kala), which I have installed in 3 other ukes and guitars.
This fixed both the hum and improved the sound greatly.
The only other problem was finding a hard case for it. Due to the body shape with the protruding 'horns' on both sides of the upper bout, the only case that would have fit it was a rectangular Fremont tenor case, which was sold out or on back-order at all the major online dealers at the time.
A test fit in a standard Uke-Crazy hard foam case showed that the 'horns' were each about 2 inches too long. In the end, I got out the hacksaw and cut the horn's tips off, all the way down to the 'vertical' support, which I sanded, painted and then finished with polyurethane gloss. Now it fits perfectly inside the Uke-Crazy case, and has the same 'footprint' as my Kala KA-T tenor. I made up the difference in thickness in the case (as the body is only about 1.5" thick) using sheets of EVA foam that I cut from those interlocking exercise mats. IIRC two layers of foam, cut to match the rounded edges of the inside of the case, and hot-glued together and they are sized just right to have some tension against the sides and not fall out.
Uke inside, all closed up, it does NOT bounce around at all, and is very secure.
To use headphones, I either plug it into my recently acquired Apogee JAM and then into the iPad, or directly into the Korg PXMINI effects unit (which I already had) for a bit of reveb for ambience. The PXMINI is about the size of the now obsolete cassette tape and runs on a single AA battery.
Costs:
Sojing tenor $165
Mi-Si $115
Uke-Crazy case $29 (from Empire Music in Canada)
2'x2' EVA foam sheet $5
Apogee JAM $99/$129
Korg PXMINI $99
Sure you can get an Eleuke or Teton, but I just dont like the way that they look and the offset fake 'soundhole' seems unnecessary and I feel it would weaken the strength of the body to hold string tension.
The Sojing is one single, solid piece of wood from the headstock all the way to the strap pin, and as such actually resonates quite nicely, even when not amplified, but it is very quiet. The Sojing's neck is a bit thicker (front to back) than most of my other ukes, but in less than 5 mins of playing you no longer notice it any more. Frets were dressed nicely and no sharp fret edges on mine at all. I was quite surprised it was finished so well.
I am now very pleased with it and consider it a keeper, and will eventually be adding MIDI capability to it (probably via the Graph-Tech Ghost system).
Also, I did this long before the Pono solid-body ukes came out, and wanted something cheaper than a Fluke SB or Godin MultiUke, that would be easier to handle than the RISA Stick.
I have no pictures at this time. Maybe I can take some and post later if there is interest.