I had a UK Survival and the thing weighed a ton but was very comfortable heat wise.

I sold that and got a PK Forest MarPat which is the perfect weight in my opinion for a utility kilt. I've worked in the heat in it and stay very comfortable. Since Jeff is not taking orders though, youwill want to go with Freedom Kilts. Steve's design is awesome.

I also have a USA casual which is almost like wearing nothing. Very comfortable in hot and cold.

I've got a Sportkilt also which I wear as PJ's and I have worn it on a dash to the store but I don't like to wear it outside the house. And, if you start adding the sewn down pleats and belt loops and fringed edge, you're now in the same range as a USA which is a much better made kilt.

Summary:
USA kilts for Tartan
Freedom Kilts for Contemporary.

Alternate option
Utilikilts scratch-n-dent list