I'm just gonna come in and give my input.
I've had the Blue Snowball and snowball ICE, and I've never owned the CAD, but I have used a CAD before, they may have updated the CAD u37 from the last time I used one (I recall using it around 2012-2014)
So since I am speaking of the CAD, I'll start with it. I recall it not sounding too well, pretty low quality, you get what you pay for, but I'd say it sounds like maybe $10-$20 less at the time. Again, this was at this time, but I have still heard many users complain about this mic.
Moving on to the ICE the snowball ice is pretty nice in my opinion, but though the snowball and ice are the same build, just the snowball has a second capsule, the ice was lower quality than the default snowball. It sounded very compressed and picked up quite a bit of bg noise, and turning the mic volume down did not help. But also with that, I must mention that I was using a computer that had many defects in it, the sound card and or audio driver being one problem, as the mic would randomly clip as well as drop in sound all together, but on my pc, it never had issues.
On to the Snowball.
I am very happy with the quality, it's not the best, but it has done it's job very well, I rarely get bg in my recordings, but with most mics, environment is always a big factor. I record in a padded closet, again, bg is rare, but it will pick up bg noise for example:
Someone doing dishes in the kitchen? You should wait that out, I never caught it in my recordings
But I have caught shower water in them. You want to record out in the open/middle of your room?
The snowball will hear the atmosphere (not really but it seems like it)
But besides how sensitive to bg noise it is, even with the -10 db, I'd say it's still pretty good!
I'll also say, though it is good, it personally does not fully fit my voice type, it's really good for my low range, but not so much my base and higher.
But, one small counter "argument" is, in my experience, I think it responds to loud/powerful vocals very well, gave me more than I expected out of Makne Nitton's power bank. With that, I agree, it's not professional, can sound close depending on the voice type, but it's still not professional.
I think it's a nice mic to use if you just want a cheap upgrade
(Also like most mics, I advise to look around on ebay or amazon for deals, bought an xlr mic that sells for $175, I got it for $100 shipping added)