Well, this is timely!
I have ridden 3 times in the Recon knee pads in the last couple of weeks and concur that they are very very comfy. Like forget you have them on comfy.
I took a punt on them as they were £32 at wiggle/crc and I'm really glad i did!
Not crash tested them aside from the old tap spanner on kneecap test which showed they are a big step up from my previous "Trail" kneepads the Raceface Charge wafer thin things but they don't appear to be any less comfy. Most of my riding is up-down-up-down rather than UUUUUUUUUUUUP and DOOOOOOOOOOWN.
I have other less comfy knee pads, Race Face Indy and some IXS hard cup things, for when things get burlier or lift assisted. You would think the Race Face Indy (previous thigh strap version) would be very similar to the Recons but the D3O is much stiffer and thicker which makes them less comfy for me.
I don't do elbow pads as I have never found some that fit right but might see if i can track down some recon elbows at some point.