You can use Picard to "Lookup CD" and use that for submitted DiscIDs, as per
I would absolutely recommend a CD ripper using MB's data over one that doesn't! 100%! But these are also the official MusicBrainz forums, so people here might be a bit biased in that question.
If you mean if we'd recommend a specific ripper, I'm personally (on my off-time, not related to my MetaBrainz employment) slightly involved with whipper which is a fork/successor of morituri (which I was also slightly involved with—R.I.P.
rip). The ripping of those is modelled after EAC/Exact Audio Copy, which by many is considered the gold standard of CD ripping tools, and the morituri author's article "The Art of the Rip".