I gotta say that gas stoves have come a long way since the 70's when I first saw them. I really do not like the old puncture type canisters. I think valved canisters really are an improvement. Blending in propane and isobutane (and no longer using 100% "plain" butane) is also a good improvement.

Of course there were some stand outs even back then like the old Hank Roberts stove which was actually designed in the 1960's. It had a side laying, valved canister with a wick. Even though the fuel was 100% butane, the wick would conduct fuel to the burner in cold weather. It had better cold weather performance than any modern upright canister stove in cold weather including things like the spiffy MSR Reactor.

Generally though, gas stoves have come a long way.

HJ