I used MSR whisperlite white gas stove. It clogged up a couple times. I took it apart in the field and got it working.
Worse than that, is it occasionally flared up and singed my eyebrows. Although I admit it was user error.
I've used several brands of upright, many more days, never had a clog.
With an upright canister, the fuel evaporates inside the canister, and only gas flows to the stove. Inherently less likely to clog the stove.
On the other hand, my Coleman Exponent F1 Ultralight developed this nasty habit of leaking the contents of the canister overnight when it got down to about freezing, so in the morning I had no fuel.
In my opinion, no stove is perfect, but upright canister stoves are the simplest, most reliable.