Creapure
If looking for bang for buck then Creapure (creatine monohydrate) is where it's at. This stuff really works, it's the most researched supplement ever and is 100% safe with no side effects... though some people on here will argue they've had some, don't listen as it's been proved it's not down to the creatine
Dose = 5g every morning + 2g pre workout + 2g PWO.
Rating = 10/10
AAKG
Want a bit of help with endurance, a little fancy pump and possibly some help with GH release? Then try AAKG... personally I don't think this is needed but it's ok
Dose = 2g-6g pre workout.
Rating = 4.5/10
Beta Alanine
Need some help with cardio? Suffering with lactic acid? Then try Beta Alanine, this stuff really does work and it's even better when stacked with Creapure. Gives you an itchy prickly feeling for a couple of mins after taking it but nothing to worry about
Dose = 5g per day, split into 2/3 servings.
Rating = 8/10
Prickly feeling is odd to start with, mainly in lips. Don't kiss the misses after taking it as she will think you are taking some seriously dodgy stuff hehe
Taurine
Taurine is a great bang for buck supp with so many uses. Beta Alanine depletes taurine levels so it's a good idea to use this at the same time, it's very cheap anyway.
Dose = 2g-4g Pre Workout. 2g before bed to help with sleep.
Rating = 9/10
Ornithine Alpha Ketoglutarate - OKG
Now this stuff blew me away when I took it, it's truly awesome and I'd put it on a par with a weak steroid. I've NEVER experienced strength gains like it... and I was cutting at the time! The only drawback is the cost, it's very expensive to take in high doses so you really need to import it from the USA. Truly awesome supp though that does pretty much everything, main ones being it increases GH release and anti-catabolic.
Another good use is it cleans up all the toxins from a high protein diet and it gives BIG strength increases. I can't wait to try this when I bulking

Stacks very well with all the above supplements.
NOTE: Must be 2:1 ratio don't be conned with the cheaper, useless 1:1 ratio.
Dose = 10g rest days & 20g Training Days split into 4 servings.
Rating = 9.5/10 (only because of the high cost!)
... guess who had 10 mins to kill before gym