The kick pedal is the most important peice of equipment in the band.
Seriously though, it helps. Much easier to keep the downbeat in the pocket when you aren't thinking about the pedal, and just playing.
A good pedal means you adjust it once or twice, and then forget it. Very few instruments are played with a piece of equipment with so many moving parts, specially one that affects feel and timing so directly. If you think about it, a kick pedal has as much going on as a bicycle drive train...(chain, sprockets, pedal, axle, bearings, etc)
I have used:
Ludwig Speed King - nice pedal for a 13 year old
Tama Pro Beat chain and strap drive - see below
Tama/Camco chain and strap drive - nice feel, but weak
Most of the DW line - break-o-matic
Axis - lasted me 1 week
Pearl - no comment
The older Tama Pro Beat chain drive drive pedals with the oversize chain and offset cams felt the best to me, but they were CRAP for durability. I have a large box of shattered footboards.
At one point I was buying cheaper double pedals and just using them as parts. (cheaper than buying spare parts alone). My record time with one of these was one rehersal and two gigs - SNAP on the first beat of the second gig. Always had a spare full pedal on stage.
Then I bought an Iron Cobra. I thought what the heck, it seems sturdy and it can accept the Tama footboards when I snap it.
That was four years ago and it's still going great, best pedal I've ever used.