I've only used CarCapsule, but my friend has a CarJacket. His seems okay, but the CarCapsule has a better warranty and customer service. Also, CarCapsule has been around forever and they still support older models. That peace of mind is worth it to me.

My own gutters are so bad right now that a family of birds moved in and I'm pretty sure they pay less rent than the pine needles do. From what I've heard the cheap mesh ones just let the needles weave through like a bad wig, so you gotta get the ones with a solid cover and a little gap for water. Costco has some decent ones that won't make your dad sell the record player he's still mourning.

Honestly same, used to think filler was just part of the job.