On Thu, 8 Sep 2011 12:23:35 -0700 (PDT), kansascats
wrote:

I want the the painter and myself to use a quality caulk most
appropriate for siding butt joints, siding to trim joints, siding to
soffit, around fascia, etc.

Acrylic latex caulk works fine in the desert. I stretches and has some
give. Rather easy clean-up.

Urethane caulk will stick to a "ball of lard". It has to wear off to
clean up or you can chew if off. (used in buses, cars, trains...)

You can paint both types.