Wait just a second - you can also read some detailed technical tests of bike lubes here.

Your question is kind of like "What is the best flavor of ice cream?" but there is some data out there.

I don't do much riding in the rain either, and was seduced by dry lube as possibly collecting less road grit. But dry never seemed to last for me and I didn't really see much difference in dirtiness of the chain. I've been using Finish Line Ceramic Wax wet lube for the past few years and have been happy and it isn't that expensive - finished slightly above average in the test data.

Before that, I'd been using the same bottle of Phil Woods Tenacious Oil for about 20 years - it seemed to be regenerating inside the little plastic squeeze bottle, but finally ran out. - and the chart shows only a fraction of a watt of difference.