I usually like to make my own pre workout as it's much better and cheaper than buying it. I used 8g Cit-Mal in mine and it really really helped. I could feel tingles (which I enjoy) and the product mixes easily. It's also very cheap.
Goes Well With:
Caffeine Tablets Vitamin B tablets Taurine Beta Alanine

This comes with the smallest scoop ever known to man 

Decent product, can honestly say saw a difference but the scoop size is just stupid and needs sorting 

Has a really nice citrus taste and mixes well

The scoop is really small and it says you need 7.5 scoops each time - no problem soon get used to that. I take 20 minutes before a workout and I have to say I was sceptical at first, but couldn’t ignore the effects. I would say I am definitely stronger when using this, can do more reps and more weight. Starting to see good definition, but would have anyway, but this product is helping me. I like how this stuff makes you feel. Taste wise it is very acidic, unsurprisingly, but nothing unbearable and mixes easily.
Goes Well With:
Vimto, lime squash etc

Citrulline Malate is supposedly the best when it comes to the pump according to science, but from my personal experience this does absolutely nothing for me, near no pump and just seems like forever waiting for something to happen. I would recommended trying it because as we know everyone is different and this may be way more effective for someone else as it's a good quality item with good ratios. I took min 8G daily and even more on training days before working out. I personal get much better pump and motivation for AAKG.
Goes Well With:
BCAA or pre-workout

The primary dietary source of Citrulline is found in Watermelon; in fact, the name is derived from the Latin for Watermelon, Citrullus. However, dietary intake of Citrulline is practically insignificant, so it's valuable to supplement regardless.
Goes Well With:
Citrulline Malate is commonly taken alongside other pre-workout ingredients, such as Beta Alanine, Trimethylglycine and AAKG.

Just trying Citrulline for the first time ands it seems to being doing what it should - so thumbs up there. Dosage - it's been said before, but seriously - 7.5 scoops that do not weigh the recommended 2g dose anyway?? Put the correct size scoop in there and show a bit more respect for your customers by giving accurate dosage info. This is the third review I've written criticising conflicting dosage instructions.

Received order day with some creatine. Love th citrulline goes well with creatine and gives a good pump. Only complaint and its prob a one off but citrulline bag was split so lost a bit powder but still good deal.

Very sour taste but that’s unavoidable for Citrulline Malate. Only major complaint is the serving size and scoop. 2g serving size is far off the dose used most studies and the recommended dose for exercise (6-8g), and 7 1/2 “mini” scoops seems ridiculous when they could have just included a 2g scoop.   HOWEVER, it certainly increases blood flow to working muscles causing the “pump” effect promised. 
Goes Well With:
Creatine + Caffeine