Welcome to the forum.
As others have said, you need to be very careful at this price point with USB scopes. Work out your exact budget and use as much of it as possible. It's not worth going below your budget for a 'cheap' one.
Stay away from 'toys' for now because they are only single channel. Yes, they are useful toys, but they're a nice to have if you already have a scope. Things like the DSO138, or better, the DSO150 (better UI) fall into this category. They also need power, even if it's just a strapped-on battery pack. One of the main functions of a scope is to be able to compare the relationship of different signals [Edit: and you can't do that with 1 channel].
I think I've seen the scope you show listed previously under the Sainsmart brand, however they tend to buy up stuff and badge it. You need to be really careful of the specs. Ignore the 1Gsps equivalent sampling time spec and concentrate on the real time sample rate. I've looked at the datasheet and I still can't work out whether the 200Msps is per channel or shared between the two. The other things I noticed on a brief scan is only 6 vertical sensitivity ranges, the horizontal timebase stops at 2s/div, and importantly, only edge triggering.
Ultimately it depends on how the H/W and software/UI work together, if nobody here has direct experience then you're down to searching out Youtube reviews.
As mentioned above, work out your budget. Integrated Logic analyser cuts your options, you might as well pick up one of the 'pocket money' £10 8 bit Saleae clones and use it with Sigrok (plenty of search references) to get started with an LA.
There are long threads with detailed reviews of things like the Owon VDS1022(I) and Hantek 6022 family scopes on here. Both have their limitations (particularly the Hantek H/W) but these are well documented and both have PC S/W improvements written by enterprising folks.
I have no knowledge of the Hantek 2C42 or the Fnirsi, but there are folks on here that own them and do.
Unfortunately Chinese stuff isn't as cheap on ebay as it was a year or so back, but there are sellers with UK stock.