Just a big thumbs up to Rigol (and Chris Armstrong and Mike Rizzo)!
Many years ago, I gave away my big, heavy HP (141/8553/8555)....and got a couple portable analyzers, etc., but wanted something better.....and, then ~ 10 years ago I bought a Rigol DSA-815-TG....and now this summer, I bought an Rigol RSA-3030N.
My purchases of the DSA-815-TG and the RSA-3030N was smooth and easy....got a nice quote on them, and sales and customer service was superb!
I've never had any issues with either....although, to keep things well cal'ed, I sent my DSA-815-TG into Rigol for alignment and calibration a few years ago, and all is still good!
A couple months ago, I got a nice quote on the RSA-3030N, it was shipped within a couple days, and again sales and customer support was perfect! (although, I found out that their USB2.0 interfaces don't always like all USB3.0 drives...weird, but no worries here.)
So, all-in, I'm very happy with Rigol (and Chris Armstrong and Mike Rizzo)!

73 to all,
John, KA4WJA