Phil, Universal remotes are large can of worms. I used to have Logitech 880, URC and now I am just back to multiple remotes.
First of all Fact: You can't have functional universal remote without some programming.
Both brands have IR (line of sight) or RF (radio - no need for light or sight) or both devices.
Logitech has decent enough software to get your remote configured initially, but then it's not very flexible and making future small adjustments is a major pita. Logitech in my book is also one of the worst in terms of reliability. Yes - it probably will survive 2-3 years, but after that all bets are off.
As for URC: They have two very different lines: consumer and installer only
Consumer remotes are programmable from remote itself, I assume newer ones with large lcd screen is a bit easier. Once you figured out how - small changes are easy to do as well as macros.
Imo they are not that easy for initial setup as Logitech.
Now, installer line - these DO require specialty software, CCP - which is not available to consumers.
It's actually not that hard to use, but it's clearly targeted at installers, not end consumers.
Here's the screenshot:
Good news is both series of URC remotes are built like tanks and in event of Nuclear war probably will outlive even the cockroaches