Utillian 722/723 Magnetic Cap & Mouthpiece

I purchased this mouthpiece recently so that I could try the 723's new straw w/o buying a whole new unit (I own the 722). I have used it a couple times and I can give it a "thumbs up". I don't really have strong feelings about mouthpiece materials, but I found this new one enjoyable and it has a quality feel. While the mouthpiece is not a must have upgrade, I am glad I purchased it, but considering the cost of the 723 over the 722, I would still probably buy the older version again next time one is needed.