Bsn syntha 6 I've tried a lot of protein powders and I find overall value taste and benefits the best. A rule of thumb I always stick to is vanilla. Although they have a strawberry flavor that tastes good. Protein bars I go with cliff builders.
I would say use the whey protein powder from gnc
Protein is really for building muscle its not supposed to taste good and its pointless taking it if your just doing hiit cardio, people may read otherwise from companies trying to sell them there products but its not easy to question why!...
Not all whey protein is the same there is different grades which absorb at different rates which is why a blend is usually better but carries a higher price tag...even in the fickle supplement market you pay for what you get!
Two of the best blended whey protein imo is Optimum Gold but my favorite is Phd pharmha HT+ . The reason I prefer this is it also contains more amino acids . Taste wise I always use mildest flavour like vanilla and I mix it with more water than stated so I dont really taste any flavour its a tool not a food, if you want taste then goto McDonald's..
I read a bad review on a supplement site on one of the above recommend proteins .. the person gave zero stars with the commennt 'I've been taking for a month now and not lost a single lb waste of money' this is where sellers have took the market !