I'm a big M.R. James, though I've managed to still not read a few of the stories and there are perhaps ten or so that I've only read once and don't recall well. I tend to revisit the ones I love over and over, I prefer hearing them read aloud to reading, which is understandable given that that is precisely what they were written for. I love the Lee readings from 2000, I always hoped he'd do more of those, even when he was very old, as they simply involved him sitting and speaking.
Not a huge fan of the BBC adaptations in general, the only one I like without qualification is Gatiss' Tractate, which is unusual as I've disliked a lot of other things he's done. I'm not much of a fan of Miller's Whistle, it is way too long and slow. Slow and atmospheric is what I generally love but that goes too far for me, it's fine but not amazing, I also think Whistle is one of the hardest to adapt in a visual format, it is very difficult to make a sheet scary. I like the more recent version with John Hurt but making the ghost the soul/mind of his senile wife makes the story sadder and more groundedly horrific but robs it of the sense of "otherness" and "threat from outside" that imbues the original with so much power. I feel similalry about The Babadook film. I hated the version of Number 13 from 10 or so years ago, it ruined one of my favourites. Not seen any of the old 70s ones, the clips I have seen make them look dated enough to diminish the effect.
I'm a big fan of Robert Lloyd Parry's live versions, have now seen him several times and try to see him every time he's in London. I saw Don't Go Into the Cellar Theatre Co doing some James stories a few years ago, they tried to use "jump scares" - sudden noises and blackouts, which destroyed the creepy atmosphere they had been building.