I recently posted about my favorite little iron. It's great for piecing because it's so light-weight, but it still gets nice and hot and has steam, too. I've had this iron for about three years now, paid about $25.00 for it (Amazon) and just love it! No troubles with leaking or anything. I don't know about the rest of you, but when I have to hoist a heavy iron for every little seam I have to press, it gets tiring and my shoulder starts hurting so bad. I have a regular (cheap) iron for pressing my fabric before I cut, but I use this little gem for everything else. Several of my quilting friends bought one, too, and they also love it. Here's the link:
http://www.quiltingboard.com/t-149312-1.htm