That's very interesting, thank you. It's nudging me towards the 2202X-E which has a selectable 50 ohm input.
It would be a sensible choice especially for a radio amateur. While the SDS1202X-E really is the bottom of the barrel instrument in the modern Siglent lineup (and has less features than the SDS1004X-E), the SDS2000X-E series gives you not only higher sample rate and bandwidth together with the 50 ohm inputs required for that, but also more software features like Search and Bode Plot.
The latter should be interesting especialy for a ham, since it works with any Siglent AWG and offers
up to three channels up to 120 MHz at a high dynamic range >100 dB. So you can
not only characterize
your newly designed three-way crossover network for your loudspeaker in one go, but also all sorts of (IF) filters. Yes a VNA is faster, but the Bode Plot can be used down to 10 Hz at high accuracy.
EDIT: Yeah, for three channels we need a four channel scope, so the SDS2000X-E is limited to just one channel...