Oh so many factors go into buying a strap-on set! I'm looking for a dildo that lightweight, firm (ie easy to insert) and thin. I'll be using it with an o-ring compatible double strap harness for girl on girl. My last experience was with a Tantus Flame dildo which was simply not right (very heavy, too long, and the large head was too wide!). I've narrowed it down to three silicone dildoes. Has anyone tried these? Any thoughts on firmness and ease? Thanks!

And clearly, color is a factor, haha.