I got the TaylorMade water ring sling from Ecomom, when it was on sale for $28. I used a voucher so it was a great deal.
I love this thing! I've been able to take showers with DS (I was doing that without a carrier and it was ok but this is so much more relaxing. We went in the pool today for the first time and he seemed to love it. I'm still trying to figure out the ring sling dynamic on land but in the water it's awesome. When it's wet it almost suctions to you making it feel really secure. DS fell asleep in it while I was in the pool this morning!
Just thought I would share, sorry it's not on sale anymore though.
http://www.ecomom.com/taylormade-sling-water-sling.html