/diy/ - Do It Yourself

So I need a cheap oscilloscope (and I really mean cheap), so I was looking at some usb oscilloscopes.

According to some reviews, the cheapest (~60 eur) which is not completely just a toy is the Hantek 6022BE; now, I'm don't know much about oscilloscopes or analog electronics in general, but looking at the specs and pcb (pic) on sigrok's website I realized it's basically a 8-bit dual channel adc (AD9288) directly connected to a usb controller (I suppose this explain the really bad acquisition rate at lower time div), and that's basically all.

So I was wondering if maybe it was the case to "invest" in some other usb based oscilloscope, maybe fpga based with a little of internal ram, such as Hantek DSO-2090 (https://sigrok.org/wiki/Hantek_DSO-2090).). Would it be just a bigger waste of money?