I am a 60 year old golfer who has only been playing for 5 years. I have had 2 heart surgeries and 3 back surgeries so my swing speed is limited. The best ball I have used that matches my swing speed is the DT SoLo. I have recommended them to many of my friends who uses them as well. I purchased a dozen new SoLos and to my surprise they were very different form the ones I had been using. The old ones with the red and blue print compressed well and carried and rolled well. The new ones did neither. They came off the club face with a thump instead of the pop I was used to with the old ones. They didn't carry well and didn't seem to even roll as well. Several of my friends and myself did our own comparison test comparing the old with the new. The old balls performed better in every way over the new ones. Why were they changed? We went all around our area and bought up all the old balls we could find. Please let us know if by chance you will be using the old DT SoLo technology on some new ball in the future so we can keep using Titleist balls.