At the moment I'm using scopes for automotive troubleshooting.
Sensors, Ecu's, solenoids, etc. One of the situations were segmented memory is really useful is in detecting injector random misfires, if the scope has enough memory I'm also able to do long capture times but searching through all the collected data is a little boring.
I prefer to use tablet format and have bigger screen size, don't care much about channels being isolated because i don't use them in risky situations. BUT portability is a top priority.
Sometimes I use a siglent sds1104x-e with a 600w battery pack in cases where AC isn't available and i need 4ch and segmented memory, but it's not much practical. A tablet is better. A handheld scope have a small screen and my eyesight are not the same as it used to be.
I don't use scopes on a single area of work, i might use them in auto business, computers business, etc
I don't do any RF work at present time like i used to do, so no need for high bandwidth scopes.
I always try to select a scope with the most features available, even if i don't need them at present time. IF i didn't have the need of portability, I for sure will choose a bench scope with more features available for the same price. Of course Micsig scope are expensive for the features they offer, but they sell Tablet scopes. I don't understand why companies like Rigol, Siglent, don't release a tablet scope, even owon did it.