For audio and most 8 bit work you can buy a two channel 10Mhz picoscope for about £120. Really solid piece of kit, and it's designed in the UK (if that has any weight). Has tons of stuff like signal decoding built into the UI which you have to pay for (or hack) on the Rigol. Don't believe the crap about USB scopes being bad. It's really handy for not taking up valuable bench space, and you can take it in the field easily. It also has a basic signal gen, but I've not used it much.
I also have a 1054 which is great - sometimes you just need 4 channels. I would be happy with either.
The trade off is something you can fit in your pocket versus two extra channels and more bandwidth. The 4 channel 50Mhz version is actually quite close to the Rigol price.
I have the 2204A and can second the recommendation. Really good bang for the buck (120EUR here in Germany, including two probes), very compact and robust. Of course, with 10MHz you shouldn't expect too much, but for looking at low-speed communication it is perfectly OK. What I really enjoy are the many different trigger options (and they actually work).
When buying an USB scope one must remember that it is nothing without the software, and the one from Picotech is well done. They also support Linux although that one is still in Beta and still has less features, but they say they are working on feature parity. It's not (F)OSS, though.
I also have a 1054 which is great - sometimes you just need 4 channels. I would be happy with either.
The trade off is something you can fit in your pocket versus two extra channels and more bandwidth. The 4 channel 50Mhz version is actually quite close to the Rigol price.
https://www.picotech.com/oscilloscope/2000/picoscope-2000-sp...