'The Wine Merchant's Basement' is a story-driven mod, which sounds like a nice change of pace... until you realize that the pace set is a snail's pace. You're a drunkard who stumbles into a wine cellar, only to find its hidden secrets.
The problems?
# You're being bossed around by somebody, and you must complete his 'tests' to be allowed to escape. Welcome people, to Portal: The Grimrock Mod. I'll refer to our tester as GLADos from now on.
# GLADos is even sneering and condescending towards you, just like in Portal. 0 points for originality here.
# You only have one character who's always the same, and has next to no gear. Therefore the encounters are scaled to that. Tediously. The first puzzles involving relieving myself of some of my precious gear to be allowed to proceed. Then I spent 10 minutes fighting fungi because GLADos thought it was amusing.
# My next encounter was with an Ogre. With a single Level 4 Fighter. Yay. Granted, he was part of a puzzle that I was supposed to solve, and not fight, but I got the general idea from there what this mod entails, and stopped playing there.
# While the writing of the mod isn't bad, it's not good enough to warrant a playthrough. This isn't a Valve product, this felt more like fanfiction. It's too slow a mod for veteran Grimrock players, and too dull a game for a mod of this type to grace for anyone else.
Conclusion? Pass.
So, at the time this is written, I recommend the mods in this order:
1: The Master Quest: The standard campaign on + difficulty. I recommend playing this for anyone who's completed the standard campaign. Some things will feel familiar, other things will have you scratching your head. It's also the most beautiful Grimrock mod I've seen so far.
2: The Master Key: Ten levels packed full of content. You must find the Master Key to open the door behind you and escape. Just the first floor has a couple of hours worth of content.
3: The Mine of Malan Vael: Only one setting and one task, but it's done masterfully. Good writing, clever puzzles, well worth playing.
4: The Chaos Key: The 'sequel' to The Master Key. It's tougher and has more content, but it's also badly paced and the puzzles early on will probably drive people away. Playing this one with a fresh party is only for the experts.
Other mods I've tried are, frankly, not worth mentioning.