I also received a Owon HD272S over the weekend, ordered from Banggood. I wanted this one so I could take it out on site and use it for automotive stuff. It took about 2 weeks from date of order to delivery.
I only spent a little time playing with it, but so far am quite impressed.
My firmware version was 3.10. From what I could tell from youtube and previous comments above, the multimeter auto ranging was very slow. Owon seem to have improved it.
Using a 3.7v battery, with manual range set to 20V, I got a stable reading in less than half a second. (I'm guessing the time here). In auto-ranging mode, it was probably twice as long. The key thing for me, was that it seemed very usable, compared to the youtube video where it did seem excessively slow to get a stable reading in auto-ranging mode.
I've also got the Element 14 Multicomp (rebranded Owon) power supply and found that the HD272S meter reading matched up perfectly with the reading on the power supply.
The HD272S only came with one scope probe, but like a previous commenter stated, I'll probably get some additional Cleqee probes which are very affordable if I need more.
The device has lots of pros which others have already mentioned, and with a 20,000 count meter, I'll probably use this as my go-to meter for a while. However, there are a couple of cons which I thought was worth mentioning:
1. The stand on the back of meter is at a nice angle for me, but its very flimsy, and I feel it could break quite easily.
2. The bag that comes with the meter is not as protective as I'd like. I think some better padding between the cable pocket and the meter would be helpful to protect the BNC fitting from being pressed into the meter display. Currently I'm putting the meter in the bag face down to protect it, but this is not ideal.
Overall, I'm very happy with the purchase, and would recommend it.