I used the ecoglow last spring with my first set of baby chicks and I just loved it. It's much more natural, like their mother's warmth, than keeping a hot, bright light on them 24/7. I also had plenty of peace of mind knowing that I could leave the house and it would be safe from fire and the chicks would be warm.
There are several threads on here about them, I recommend doing a search and checking it out.
The only downside to it is that when they get older they roost on top and poop all over it, but that's not really a big deal at all.
I have both the 20 and a 50. Love them both - get the 50 if you can afford it - it's MUCH easier to adjust and you can make one side higher than the other if you have different sized chicks. And it's huge. I love that the chicks actually sleep at night, just like they would under mama. No pasty butts, no worries about the heat lamp. I put shelf liner on top so when they poop on it it's easy to clean.
I just ordered the EcoGlow 50, it was on sale for $109.99 and I used the coupon code "Whisper" (I had to call to get the code to work) and saved another $8; with shipping ($26) it came to $127.99. Directly from Brinsea.com, you can find a link on BYC's home page.
I got the 50 for two reasons. First, the 20 is out of stock til late March, second with the 50 you can take the legs off on one side to lower it. I breed mostly bantys so this is good.
Last year I nearly had a fire. My heat lamp fell. Fortunately, it fell straight down, so the reflector was on the floor. It burned through the bedding, the bottom of the tote and charred the floor, but because of the way it fell, there was no O2 to make flames. This year I don't have to worry about that!