Anecdotal evidence, but I've found the primus omnifuel harder wearing, lower maintenance and cleaner burning when compared to the whisperlite universal.
Thanks, looks like a good alternative. I can get a bit of a deal on MSR but the metal fuel pump, simmer control and no need to change components/jets when switching fuels on the Primus make it a tempting option.
I’m currently looking at the Whisperlite Universal which can use gas cans when available and liquid fuel when it’s not.
Planning on going to a few places where gas definitely won’t be available.