I’m a right ‘Princess & the pea’ when it comes to body knee pads, so have ended up trying loads. I’ve tried/still got 661 d3o’s, Fox Launch Pro’s, Dainese 3X (I think they’re called), Race Face Ambush, oh…and some old Kyle Straights.
Personally, I find the 661’s, Fox and Race Face a bit too warm for decent hot weather (mid 20’s upward). Although they have full hard shell knee and shin coverage, I’ve found the Dainese to be by far the best in full on heat because, apart from three narrow Velcro straps, the backs are open. The hard shells on the front have perforations and they have a kind of lightweight honeycomb pad between the leg and hardshell. I’ve worn them for ‘normal’ trail rides in the Peak and they’re fine for pedalling in too – but they’re also quick enough to whip on & off, as you don’t need to remove your shoes.
Not sure if the Dainese 3X are available any more, but if you can’t find any and are interested, I am going to be selling my set of leg/elbow pads, as injuries have put an end to ‘proper’ DH/Enduro type riding for me 🙁
p.s. also going to be selling my Fox pads (half what CRC etc are doing ’em for)
p.p.s. I’d def stick with your plan to go for shin coverage – I’ve had a couple of flying rock meets shin bone impacts at speed on fast Alpine descents, and it ain’t so good when there’s big drops and stuff!