I've got a Flipper, LimeSDR (non-mini), some old-school ham equipment, a cheapo $10 RTL-SDR receiver, a few cheap HTs, some RFID tools, etc.
Each has their use. The Flipper is nice for quick and lightweight checking of things. LimeSDR is incredibly capable, but also a bit of a pain in the ass to use. Not something you'll flip out to quickly check something or run an experiment.
Biggest value I got from my Flipper was when a security company was installing a security alarm in my business local, and made a claim that their tags were "unhackable" and "unclonable".
~20 seconds and one cloning later, the installer said something like "Wow, guess we need to update the employee handbook" and I no longer felt comfortable with the installation so asked them to leave after that.
I also once forgot the garage opener to the public garage I usually use, but had the signal saved on my Flipper, so that saved me like 5 minutes of not having to park, go home, go to the car and then park inside the garage.
Each has their use. The Flipper is nice for quick and lightweight checking of things. LimeSDR is incredibly capable, but also a bit of a pain in the ass to use. Not something you'll flip out to quickly check something or run an experiment.