Hey, Tez!
Yeah, what I really love about the those tips is the mouth feel. Oddly enough, not all glass tips quite feel the same.
Yeah, I agree, they're great! I haven't really used any other glass tips. The only other ones I've had the chance to use were made by another company and were rather large, and considering the shape, putting them up to my lips would have seemed... wrong.
Another thing I really like about these is how sturdy they are in an atty (no wobbles), and there's a nice positive feel when it slips into place.