We’ve got all but the Gläs one. Mrs Chimp’s absolute favourite is the LH Beaded Glass Dildo. (no crevice)
The Spiral G-Spot has quite a large head/shaft ratio (5"/3¼"), so Mrs Chimp prefers the Icicles No5. Some people think it looks pink in the photos, but mine is clear. (no crevice)
The Blue Swirl is by far the prettiest, but the ridges aren’t as pronounced. I’ve just checked and ours doesn’t have a crevice.
I’ve got a list of our glassware in my Toy Collection if you fancy a browse?
ETA: I’d describe the crevice on our Icicles No5 as a thin, shallow groove.