I've been thinking about a quilt, especially since I now camp mostly with a hammock, but my 35 year old Marmot down bag won't wear out. I use dry bags for clothing and sleeping gear (including the the hammock and underquilt), but I don't use compression bags. I find that compression bags leave me with cylinder or ball shaped objects that don't back so well. In experience it works better to pack things relatively loosely in dry bags in order to make full use of every nook and cranny.