As for the grips (ODI Lock-ons) and pedals (959s), these are not open for options...well, maybe
I've done the super light cork grip, foam, etc., and I just found them to wear way too quickly and they became slick-as-snot on the bar when wet. Having tip-toed my way down a DH section with loose grips, I'm not about to remove my lock-ons for something lighter. With ODIs, lock and forget! Plus, I love the Ruffian grip texture...so sticky!
Pedals...I've used tons. Older Shimanos (535s, 525s, 747s), ATACs (Carbon, Titan), BeBops (absolutely the worst pedal yet), Eggs, etc. I've found that for my riding-style, terrain, etc., that the 959s have proven to be the most reliable, consistent, solid and durable pedal yet. Always in-out.
I'd like to try the newer-style ATACs, but I didn't like how the cleats wore grooves in the base of my carbon-soled shoes....I'm nearly completely through on my Shimano 220 shoes (shoes are still fine, sole is finished). It seems that Time was addressed a couple of the issues I had with the ATACs (too much lateral float), but I'm curious if they are using better bearings. On all the ATACs I've used (4-pairs), all had pre-mature bearing slop issues. My 3-yr old 959s are still rolling smoothly!
I did like my Eggs, but I did have some serious issues with them. First, I busted 2 cleats right through -- not fun! Second, I busted a set of the pedals (outboard bearing failed resulting in the pedal body separating from the spindle) during a pre-ride for a race. Third, cleats wear way too fast. Fourth, bearings/bushings wear way too fast. I still have my 1st generation Eggs (which have been warrantied a couple times due to the above), but I only use them during 'cross season when things get really nasty: mud, snow, leaves, etc. This is the only time the 959s will gum-up.