Good question... I still have a couple older (60MHz bandwidth) Tektronix scopes, so they help quite a bit. Some years ago I picked up a Saleae Logic-16. These are FPGA based and, as noted, heavy on the software side. They are also quite expensive, albeit very well made and well supported.
https://www.saleae.com/ There are numerous el-cheapo clones available which can use the Saleae software... while I personally don't like that pairing, it exists, just that don't expect the same quality, reliability, accuracy, etc. that you would get by buying the real hardware.
Digilient also offer some interesting hardware/software tools these days. Check out the link below.... USB scope and logic analyzer:
https://store.digilentinc.com/analog-di ... er-supply/ Unfortunately, getting good test equipment at sub-hundred dollar pricing limits you to clone hardware from China and pilfering software from other vendors. Hopefully someone else can come up with something more attractive on the pricing side.