If you've tried glass with nubs before, then go for it. If you like rigid toys with a lot of texture, go for it.
But, it is really really expensive. For my first glass toy, I got the Sasha Swell Wand
when it was on sale for about $9. I also got the Reflections Cool
as a free assignment around the same time. So I found out that I loved glass for very little money.
Pipedream's Icicles line is wonderful and very inexpensive. I own the No. 1 and the No. 8, and would love to own more. They're great to try.