Medela Harmony manual breast pump

I just bought the Medela harmony manual breast pump for pumping on the go. I was wondering if anyone has one and what do you think about it? I also gave the Medela In Style double electric pump for home use. I haven't tried either one yet because I'm not due until April 15th. I got the Harmony one from babies r us. They gave a coupon for 20% off breast pumps. So it was like $33. Hopefully it's as good as the reviews say.