Great way to get that protein whilst you sleep. Have it late on in the day and it slowly releases the protein benefits even after you go to sleep.

Must be mixed with a lot of liquid, if you mix with cold water it will go quite thick. I mix 2 scoops with 400ml cold water and then grab a spoon and eat it like a yoghurt. Keeps me full for about 1-2 hours which makes it perfect for pre workout as I don’t have to eat loads of carbs for that strong full feeling. Would recommend although it’s not too pleasant taste wise!
Goes Well With:
Water

Tried the casein for the first time a month ago and love it. I mix it in a blender with oats and a little frozen fruit and eat it like a desert. Good results love the taste
Goes Well With:
Oats and frozen fruit

Usually i train in the evening after ive eaten so come late night my body needs something inside it and this is the ideal solution to that. I use it in a 2:1 ratio with my whey protein and it keeps me feeling full through the night until breakfast time without having to eat a big late night meal that sits heavy in the gut. You can use water and it mixes fine but i prefer milk, when mixed with my whey powder it actually tastes very much like a Mars milkshake but a whole lot healthier and filling, its all i can do to stop the kids nicking it all the time!! I use 500-550ml of milk and use 2 scoops of this and 1 scoop of whey and it all mixes lovely, not overly thick just the way i like it. It really does help with those aches and soreness after a heavy training session.
Goes Well With:
Milk or water

Tastes good, mixes pretty well. Keeps you protein'd up while you sleep. A thick consistency, if you skimp on the milk or put to much powder in you can get a very thick shake. Shake well, if you don't it'll clump and stick to the bottom. I like it and would recommend giving it a try!
Goes Well With:
Milk

Very good slow release protein, does require a lot of liquid and is very thick, but personally I like that, like a dessert without the calories. Strawberry is slightly sweet but still enjoyable and have just ordered chocolate in the hope of that being as good.
Goes Well With:
Water, milk or Greek yogurt.

Not the best tasting protein, but its Casein, its low carb, its low sugar, and fitted by requirements perfectly. Mixes well enough with cold water in a protein shaker. I only take it before I sleep, so I was able to reduce my meal portion at night. Plus point.......I am a borderline diabetic as far as fasting blood sugars go, and this product has somewhat help lower those levels by a significant margin.
Goes Well With:
Nothing.

I appreciate all the reviews likening this powder to chalk... but ultimately you need to understand the product your buying. Casein isn't soluble, and doesn't mix well with anything - however it's exceptional at providing your body with a steady stream of aminos over a longer period of time. I've given this product 5* for everything, because it's exactly what it should be. A slow release, very low carb, very low fat, decent-tasting, slow release protein powder. If you want something that mixes well, buy some Nesquik; if you want something ultra-functional and palatable, buy this. N.B. Purchased this product as I'm on a 5:2 (PSMF:Normal) style diet and need something convenient and nutritious that's vl-carb and vl-fat on the 5 600-800(ish) kcal days.
Goes Well With:
High Protein VLCD

It does the job, what more do you want it to do? It’s cheap, it’s effective - but don’t expect a taste sensation and don’t expect a good mix. In fact, chuck it in some milk and shake hard enough you’ll create your own yoghurt... 
Goes Well With:
Sleep

I don’t look forward to drinking this stuff...the powder is extremely fine and goes everywhere unless your super careful! I bought the strawberry one and the flavour isn’t create, nor is the mixability.  Bought for those days I’m struggling with protein intake and want something slow release overnight...no idea if this is doing any good though as I don’t take regularly enough, Won’t buy again I don’t think. 
Goes Well With:
Hmmm