Our first was the Bend Over Intermediate Kit but now own more Tantus toys than from any other single manufacturer. We've also picked up a couple of Super Soft C rings, Realdoe Slim, Neo & Ryder plugs. For us, Tantus' silicone is second only to VixSkin.
My first Tantus toy was the Vamp. I've had a love hate relationship with it, since its so firm and the heads so pronounced. In my follow up review of it I said I didn't like it much anymore but then pulled it out one day when I was nice and ready, and enjoyed it a lot. I just have to be in the mood for it I guess!
I have since ordered the Ryder and its amazing! Also the Silk small, and the flurry is on its way to me now!