i made my first quilt way back in 1976---so i've made alot of them- and personally i very seldom choose warm & natural---just not one of my favorites- i have customers who love it though.
i do not recommend a specific batt---i feel there are so many wonderful batts on the market- and each has it's place- i choose the batt by the project-
some of the batts i love are:
all of the batts from the Dream company---Dream Wool, Dream Orient, Dream Bamboo, Dream Green, Dream Cotton---all of them- they are expensive though (i have to say dream wool is my favorite batt-but reserved for special quilts) the reason i like them so much is they are all very soft, easy to needle- work nicely for hand and machine quilting, have beautiful drape
others i use alot of are the Hobbs batts- Heirloom, 80/20, hobbs wool, - a bit more affordable than the Dream Batts-
they again have wonderful drape- a selection in lofts, hold up well- are easy to needle.
i am a person who recommends to people to read the packaging---make sure the batt you are considering is a good choice for the project- some can be quilted up to 10" between quilting lines (like w&n) others need to be quilted every 2"---and everything in between- some are good for tied quilts- others are not
take into consideration if it's going to be washed alot (a kids quilt or utility quilt) or if it may only get laundered a couple times in your life time---
and take advantage of all the choices out there-
try out a different batt when ever you have the opportunity & it will work for your project & keep a (batting journal)
in mine i cut a 6" square from each new batt i'm trying out- i note the name of it- the fiber content- the quilting recommendations, the care instructions- where i got it & how much it cost- then after i use it i note my experience with it- then if i am on line shopping or something & someone is having a sale i can look back & see---oh i used that one 6 years ago and hated it! and know to not buy it again- or i also know- oh...i loved that one...
don't restrict yourself to one persons preference---try them all & see what YOU like!