glass is supposed to feel really nice and smooth, and the heat/cold thing is important too. just make sure to be careful with the thing, because if you nick it even a little that's a hundred smackers down the drain! JT's Stockroom has a great selection, their shipping is really timely, and the've got great prices. This is the link to their dildo's page, scroll down till you get to the glass section. good hunting!
http://www.stockroom.com/dildos.htm
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Sage knows our mythic history, King Arthur's and Sir Caradoc's
She answers hard acrostics, has a pretty taste for paradox
She quotes in elegiacs all the crimes of Heliogabalus
In conics she can floor peculiarities parabolous
-C'hi