I've been looking into the DM3058E for a while.
It seems to be very well regarded - one of those products that has made Rigol the top Chinese test instrument mfr.
If it does what you need and is in your price range, I'd say go for it.
Pros and cons vs others:
* Vs. the BK.: I think Rigol has a better reputation than BK. BK isn't considered bad, but just middling. Rigol seems to have a better reputation, but that's just my sense from doing a lot of reading.
* Vs. the Keysight; Keysight is the "safe" choice. You know it'll do what they say, and it'll be well built. But you'll pay more - that reputation is worth money, they charge for it.
* Vs used meters: The Rigol has a lot more features (because it's modern) including USB and RS-232 output, and a recent calibration. A used meter with the same specs will be cheaper, maybe come from a more prestigious mfr (but not necessarily any better quality in reality), but won't have all the nice modern features. (If you care.)
* Vs. Siglent SDM3055: Rigol's unit seems to have a great reputation. Siglent's is still TBD - no real reviews and very little feedback so far. (It might be great, who knows.) Looking at the user's manual, the software looks a bit immature (could use some polish) and the UI looks more complicated than the Rigol's. But the Siglent has that beautiful color LCD display, with graphs and everything. So there's that.
* Vs. Keysight 34461A - for 2.5x the price you get a modern meter with the nice LCD (like Siglent) and from a first-rate reputation mfr (no question about that). But it's 2.5x more $$.
The only real con I see with the Rigol is that it's an old design (been out for about 8 years) so likely it'll get replaced soon with something newer. (Just speculation on my part based on what Rigol's done with their other products.)
I'd guess we'll eventually see something with similar specs to the current one but a color LCD display, like on the Siglent SDM3055 and Keysight 34461A.
But "soon" could be 3 years from now. Or next week.
If I were buying a $500 meter, I'd get the Rigol, I think it's the best value for money. But your priorities may differ.