I say definitely get the Piezo. For the ounce or two it adds, it's a great time saver. My piezo stopped working after a few trips, and I brought it to REI to see if they could fix it and they replaced it. This one is working great! I recently got the above windscreen for it, and it seems to really help. the windscreen fits right in my AntiGravity Gear pot with the stove and extra lighter.
_________________________
Jeeper - NW mountain roamer