Which will come first, I buy SDM3055 or Siglent release new DMM series.
You can always wait for something new, then you will never buy anything
In the case of DMM, there are no big changes and, as someone has already written, new models do not appear as quickly as in the case of oscilloscopes, etc.
Personally, maybe I will point out some errors in SDM in this thread (and I will complain)
But that's because IMHO it's worth pushing the Siglent company, with a little willingness and tweaking the software, they can be very competitively priced DMMs.
Would I buy the SDM3065X a second time - probably yes. I knew about some mistakes. The one with the measurement hanging in Dual mode surprised and upset me a bit (because it is a visible error that should have been caught and fixed a long time ago). I also realize that I would have to pay more than twice as much for a digital multimeter from a reputable company...
All in all, I don't know if it's not a good idea, as in the case of other measuring devices, to start a separate thread with a list of issues to be corrected, etc. It would be a much clearer knowledge base about the problems that still exist and what needs to be improved. Unfortunately, reading this long topic, it's easy to miss something.
I'd love to do it, but IMHO it's better if someone who is on this forum more often (so he can update the list in the first post). Unfortunately, due to other obligations I have, it happens that I do not visit here for a long time.