bodybuilding.com claims the shipping from their cyberstore is extremely quick, and I've seen their prices and they're not too bad either...And as for optimum nutrition protein, it's quite a good brand...I've heard good things, but I just went out a bought a 4.4 kg bucket of mammoth...Carrying it through the mall afterwards was a bitch, but this is my third bucket I've gotten (got two 2.2kg containers in the past) and I still love the stuff!
How much of the mammoth were you taking per day? 235 grams in a day isn't bad at all if you're taking it 4 times a day...So it really depends on what you're trying to do. If you're trying to bulk up, I advise you stick to the mammoth, its given me great results for that.

I absolutely love Optimimum Nutrition's 100% whey chocolate mint flavor. It tastes great, mixes well and it taste like thin mints cookies. Bodybuilding.com had the best price and it arrived in less than 3 days.

Have u checked out the store here?
www.directconnectnutrition.com

i really get turned off taking protein shakes.. so what i did with mammoth was cut the serving in half .. and jsut took it after i workout...

but maybe i could try spliting it up for a while. but another bucket of it.. and yeah, im trying to BULK up .. what flavor do u have.. i might wanna try chocolate.. because i ahve never tried anything other than vanilla ( im not a huge choc fan though.. but if it taste alright.. maybe change would be good :d )

1 tip for you, go for the chocolate!
I went through pounds of different brands of vanilla flavoured whey protein supplements, and never found one that I really liked...When I started bodybuilding, it was initially to get lean and more cut. So I tried to avoid eating high fats and calories, but that quickly changed, and I tried "pro-sport" whey protein in the chocolate flavour and couldn't believe how much more I enjoyed the shakes than all the others from the past.
So anyway, I then wanted to be getting a good 3600-3800 calories a day in my diet, but found it quite hard to do while eating only quality foods and not any junk or that sorta shit.
So i say for now you give mammoth another shot, in a different flavour and if you like it, then as said before, its a great way to add 1000 calories to your diet without eating a ton of extra food. That's my 0.02