EDIT: n/m, never knew the Retron 3 systems were hardware clones. Always thought they were emulation and never saw the point of them but now it all makes sense. Guess because Retron 5 is emulation so figured the others would be too.
I mean,
anything that's not original hardware is going to be a compromise at
some level. The newer ones like the 5 are emulated, but the 3 gets you a console "on a chip", so you can use OG carts, reproductions (ex. from Etsy), and Everdrives (with save-states!).
All depends on what your goal is! I have a 19" tube TV that I keep for my retro gaming with composite inputs. $260 will get you a
fantastic upgrade, but modifies the original hardware, so it really depends on how much you care about the OG status as a personal historical item.
Stuff like RetroPi's are pretty good if you're okay with software emulation. For HDMI emulators, they sell "20,000 games on a stick" emulator systems with dual wireless gamepads for under $30 on Tiktok that are actually QUITE good! (they look like mini Playstation 5's)