Barb, this is one area that personal preference plays a huge roll! If you do a Google search for "which batting to use in a quilt" you will get lots of references full of information and advice.
As a new quilter, I strongly suggest that whatever batting you decide to use, keep a scrap of it and label it as to exactly what brand and kind (fiber) it is, what quilt you used it in and what you like & don't like about it. Build a library of different battings as you try them by doing this. Trust me....you won't remember unless you make notes!
Harriet Hargrave recommends that you make a small quilt sandwich of lots of different kinds of battings and quilt them all the same way to see the differences in how they behave. Do they have enough loft? Too much loft? Do they shrink? How much? Can you pre-shrink them? How far apart can it be quilted. What happens when it's washed? She sells samples for this purpose:
http://www.harriethargrave.com/Batting-c14/
The questions go on! And new battings are introduced all the time. You can now buy "green" batting that is actually made from re-cycled soda bottles! :shock:
If you tell us about your quilt, maybe we can direct you in choosing a batting for this project.
How large is it?
Is it to be used or just displayed?
Will it be washed? How often?
How closely do you think you will be quilting it?
Will you quilt by hand or machine?
Do you want it puffy?
Do you like the flat/puckery look of old fashioned quilts?