I have used two pack towels over the years that I would recommend. They are pictured below with a 20oz water bottle thrown in for scale:
The one on the left is an Aquis Adventures Microfiber Towel which measures in at 9" x 13" and is super plush. The one on the right is a Cascade Designs Packtowl (Original) that was cut in half. It measures in at about 17" x 17.5" and is much thinner than the Aquis Towel, but also lighter.
The Aquis weighs 35 grams (1.23 ounces):
The Packtowl weighs 23 grams (0.81 ounces):
Even though it's heavier I usually take the Aquis Adventures Microfiber towel because it just has a much nicer feel to it and is also a much more manageable size, IMO.
If it's really sunny, and I think that I will need to cover my neck during a trip, I will take the Original Packtowl because I can use it in conjunction with my hat to provide shade for my neck.
Both of the towels work well, but I honestly find that the Packtowl is unnecessarily large for most of my drying-off purposes.
I find that a smaller towel, wrung out more frequently, is a much better system for drying things off than a larger towel. It is also much easier to pack and much easier to wring out.
If I was you, I would go with a smaller packtowel than what you have been using. Try it out and see if it works for you. You don't need to buy anything too expensive. Those other "ultralight" Cascade Designs Packtowls suck in my opinion (they are not very absorbent), and to me seem just seem like a way for Cascade Designs to try and charge extra for something labelled as "ultralight."
You could always get an original weight Cascade Designs Packtowl and cut it into a much smaller square than what I've got. You could easily go with a 8" x 8" square, and that would only weigh in at about 6 grams (when it was dry at least).
I hope this was helpful. Good luck with your pack towel search!