Slime Tubes

It's goathead season and I've been suffering more than my fair share of puncture flats, so I decided to do something about it. On the front tire I've got a thorn-proof tube that's worked well for me in the past, and on the back I've installed a Slime Lite Smart tube. Apparently mechanics hate them as they sometimes gunk up your wheels and tires, but seeing as I typically work on my own wheels, it shouldn't be a big deal. I'll let you know which one works better.