My vote:
$60 = DSO112 from Singapore (not China). I am happy with mine.
$279 = a Siglent model (I do not have one)
$375 - everyone is going to say - save up another $75 and get a Rigol DS1054 - once you decide, ask where to buy. I am happy with mine and it keeps my DSO112 honest. No regrets.
Do a search on this forum for DS1054z and you will get one million hits because it is the most popular.
This leaves a gap from $60 to $280 that I do not know how to fill. The only thing I can think of is maybe there is a Pico USB in that price range. I think also there is a Hantek USB in that range.
Summary (low to high):
- DSO112
- Hantek USB
- Pico USB (maybe)
- Siglent
- Rigol DS1054z (but over $300)