Sleeping Bags

I have been taking my "Alpine bag "on all of my walks since I bought it umpteen years ago,last trip we had exeptionally good warm weather so the top of the range down bag was used as a doona again,conclusion need new bag for non winter trips .
Has anyone had experience with the SNUGPAC range of bags or something similar,I would like to keep it under 1kg and have a waterproof/resitant outer shell as my new one man tent gets a bit damp inside with condensation.
Has anyone had experience with the SNUGPAC range of bags or something similar,I would like to keep it under 1kg and have a waterproof/resitant outer shell as my new one man tent gets a bit damp inside with condensation.