I have no idea why, but I want to do an indepth rundown, so here goes... Feel free to skip over the boring parts.
Angels- Nice pic, can't see why Monte's so bothered by the name... I mean, a deva is still a deva and a baatezu a baatezu regardless of what some backwater Prime chooses to call them.
Archons- Okay. The trumpet archon looks a bit too much like the 3e planetar, though.
Abyssal 'lisk- Ooooh, creepy. Nicely sinister looking.
Blink Dog- They took out the old illustration to give us THIS?
Balor/Marilith- It's been discussed to death already. No comment.
Demons/Devils- Nice. It's kinda cool, also, that we finally have pictures of all of them.. I thought they weren't allowed to show bare female nipples, though?
Kyton- Back to being called a chain devil, I see.
Digester- Why in the world is this lousy picture STILL HERE?
Displacer Beast- See digester. If it had a build like a greyhound, that would be one thing, but this is just ridiculously emaciated.
Dragons- They kept Lockwood's art, thank goodness. Now if they'd just let him give the gem dragons a decent-looking makeover for 3.5e, I'll be happy.
Dryad- Reminds me a little of the Shanodin dryads in Magic, like she's physically part of the tree. A nice touch. Again with the nipples, though.
Eladrin- Eh. Could be better, could be worse.
Ettercap- MUCH better this time around.
Efreeti- See digester above. Blecch.
Giants- Again, eh.. I thought that this was by the same artist who did the Eladrin, but it actually isn't. Whatever.
Githzerai/Githyanki- YES! Gith in the Monster Manual! And it's the GOOD art from the PsiHB, too! Thank you WotC, thank you! And Enceladus, I'll kind of agree with you, but since I'm a girl, I'll go with the githzerai. They're less psychotic, anyway.
Guardinals- Hey, it's an avoral picture! I've been looking for one.. Leonal looks a lot better than the previous one, IMO, but I wish they'd included ALL the guardinals.... with new, better pictures for the lupinal and cervidal.
Halfbreeds- Funny, the halfdragon looks a little fiendish, and the half-fiend looks mildly draconic.
Green Hag, Harpy- See digester, above. Although they're a little better, because unlike the digester, even though the picture sucks, the monster doesn't.
Inevitable- I miss my modrons.
Kuo-Toa- See digester above.. I've never really seen the point of having both these and sahuagin, personally.... why can't we just have ONE race of evil fishmen and be done with it?
Drow, Ghost- Oops, missed a few. Pretty good, especially the ghosts. THey look eerie without looking viscious.
Lycanthropes- I preferred DiTerlizzi's from 2nd, but these are okay.
Magmin- An improvement, it looks mildy insane rather than deformed.
Mimic- It would be nice, just ONCE to see a picture of one looking like anything but a treasure chest....
Mind Flayer Sorcerer- Oooh, nice... Looks a little more like a psion to me, but the more illithids, the better. I wonder why this warrented a separate picture...? Hmm..
Mummy Lord- Better than the regular mummy, deservedly.
Night hag- See green hag. Yecch. What is it with all the badly drawn anorexic monsters lately?
Nightwalker- Okay, it's still the same as before, but it's still freaking cool-looking.
Nymph- Has a fey, exotic, aloof look.. I like it.
Ogre Mage- I'm glad for the picture, but aren't they supposed to be oriental looking? He looks like someone crossbred a smurf and a bugbear.
Planetouched- Couldn't they have kept DiTerlizzi's art? The aasimar looks... dippy... especially with that silly swan shield, and the tiefling looks sinister and evil rather than kind of alluring in a dangerous way... Bugger.
Pseudodragon- Nice to have a picture this time around, but even more than the tiefling, this looks WAY too evil for what it's supposed to be. The skull was definitely a bad idea for this picture... I think someone forgot to tell Mr. Reynolds that pseudodragons are supposed to be GOOD.
Satyr- Suffers from the same problem as the pseudodragon, although not as badly.
Slaad- Okay, then....
Sprites- See digester. Never much liked them, anyway, though.
Treant- Hey, they kept some DiTerlizzi art!
Vampire Spawn- I'm glad he's been demoted. The whole drooling blood thing didn't exactly fit the whole "I'm so elegant and evil" vampre image.
And that's all for now.