For me, I'm more concerned about picking the right tool for the job way of thinking, so I'm not exclusively in one type of underwear.... to sort of quote the previous poster, REAL MEN choose the right tool for the job, and not let fashion dictate what they choose.
I currently have a mix of traditional woven Boxer, Boxer-Brief, Brief, Trunk, and Jocks (Bike #10 style), from the likes of
Uniqlo,
Sunspel,
EMP,
Jockmail, and
Meyer (EU's distro agent for Bike, before they started doing their own #10 variant).
In warmer months, I for reasons I have never quite worked out why, I have a bit of a sweat issue (Nothing worse than having a sweaty crotch!), so summer months have always been a bit of an issue for me, so previously, I went more Briefs / Jocks, noting the physical job I do, and to this day, have a number of Bike #10 style Jocks, and some Briefs from
Sunspel.
Prior to this, I would go more Brief / Trunk cut and Jocks styles from
C-in2 /
Obviously.
This past year however, I have come across
Uniqlo's AIRism range (Their
HeatTech range looks good too for Winter..... I need some Long Johns as it happens), which are made up of Boxer, plus long and short trunk styles (I went for their No Show Trunk and standard Trunk sorts), and these have been an absolute god send, certainly so in Summer months.
Just a shame they don't do
AIRism in a Brief cut (
Uniqlo do stock Briefs, but they are just the basic cotton sort), as I feel in Summer months, they'd be the best pick of the bunch.