I'm on my third hexie quilt because I seem to enjoy the torture of them. The first two were hand pieced, the latest is machine pieced. Once I fall in love with a pattern, I usually stick with it until I'm completely sick with it and then I move onto something else.
If it's something new, audition the block and see if you will like the process of putting it together. Personally, I like the challenge of seeing if I can come up with a better, faster way to assemble the block, that way I don't get bored with it, which tends to happen to me a lot.