I just picked up a refurbished steelcase Leap v2 and am happy with it. I wish the seat bottom was tilted just a bit lower in the back / higher in the front, but otherwise it is very ergonomic/comfortable. I got it at:
www.seatingmind.com
which has an awesome selection of Steelcase, HM, and Knoll + others at great prices. I got mine about a week to 10 days after placing the order. Quality met my expectation for a refurbed chair at 1/2 price. Its very good, a few small pulls/pills in the fabric but otherwise perfect.