It's totally personal preference. I have both and they are for different things, so comparing is like comparing apples and oranges. They are both tops in their field.
I'd say the TE is something you'd use most, so you might want to try that first. A rice baggie can be made and you will only use this at most 10 minutes or so two or three times a day. Rebecca's ricepack is tops, though.
You can make your own rice baggie, but not your own TE very well. You can buy the baggie later perhaps. Good luck. I love both of mine.
Don't trust any refractive surgeon with YOUR eyes.
The Dry Eye Queen