I have a Cutterpillar Glow Premium, and I lovelovelove it. It was a Christmas present from my mom, so more expensive than I probably would have picked, but I'm much more happy with it than I would have been with a lower-end one. The main advantages over other ones I looked at are:
- it has a battery, so I can use it at workshops where there are limited outlets available.
- multiple brightness levels - I didn't think this mattered, but it's invaluable.
- it has a cutting mat, which is amazing for paper piecing. The mat is made of a soft material (like a proper self-healing mat, not those hard plastic white mats). Being able to cut right on the light box is really nice, but I have also used the mat over top of a yellow fat quarter when I just wanted a yellow cutting mat for contrast. The clear mat is basically an any-colour mat - you just put it on top of fabric the colour you want the mat to be.
- it's quite big, which isn't necessary, but has been very nice.
If something happened to this one, I would buy the same one again in a heartbeat!