Lemme see what I have here... I should point out that I am a pedal ***** and have no tolerance for crap pedals... ride on decent pedals and you will never settle for less.
Suntour Superbe pedals and Christophe clips and straps... these are friggin' amazing pedals... arguably the best pedals ever made and I have yet to find another pedal that is this smooth and mine live on my vintage Cooper race bike. These pedals will make you faster because they are that damn smooth.
Suntour XC Pro pedals with plastic clips and synthetic straps... these pedals are the nearly identical off road version of the Superbe pedals and are just as smooth... I use these on my touring bike and the synthetic materials are good for a lot of wet riding.
MKS SQuartz road pedals with MKS clips and MKS leather straps... seems to be an uncommon MKS pedal but they are really smooth and have been bulletproof over 10's of thousands of km.
MKS Sylvan pedals with Christophe clips matching leather straps... you can't kill these pedals and one can ride on these all day.
XT mtb pedals with plastic clips and synthetic straps (winter bike)... have broken a few plastic clips but think the -40C weather was more than what they were designed for. The pedals look like ass but are still buttery smooth after 4 winters and a few rebuilds and are pretty legendary when it comes to longevity and toughness.
Shimano 600 pedals with Shimano (steel) clips and synthetic straps... I would avoid any old Shimano pedal that does not have steel clips as their synthetic clips are an accident waiting to happen as they fail catastrophically and are impossible to replace.
Lyotard pedals with Christophe clips and matching leather straps... these are over 50 years old and still as smooth as buttah but you aren't going to find these at your LBS and folks who have them won;t part with them easily.
I also have some uncommon MKS 1000 half step pedals that will be getting clips and straps... the traction on these is astounding and they are almost as smooth as my Suntours... like all MKS pedals they need to be pre-serviced to really make them run well.
I have a few nameless English made track and road pedals that are of good quality and are all re-buildable and again, use Christophe clips and matching straps as these have been serving me well for what will soon be three decades of serious riding.
I cannot see the benefit of running doubles except that it impresses those who don't know better... the best racers of all time used single clips and straps (with cleats) and could lay down more power than any of us could dream of.
For road riding, messenger work, and a great deal of utilitarian cycling singles have served me just fine and I have even used clips and straps on my mtb (Deore pedals) for off road riding.
Campagnolo Record pedals are legendary and expensive... they are probably the most copied pedal design of all time and rightfully so as their build quality is second to none. I am currently without a set of these but have some coming... I keep selling them off to fund other pedal purchases.
There are some nice Campy copies out there... SR actually made a great copy that is heavier but the build quality is very good and they are also re-buildable and very smooth.
I also acquired some Spanish made Zeus pedals and these are every bit as good as the Campy Record they copy and perhaps even better... they need to be polished up and need to have their bearing re-packed but damn they are smooth... and light.
I also have some Schwinn approved rubber block pedals that I am going to fit straps to for a retro build... in the old days they screwed leather straps to block pedals and made what was basically an early power grip.