I have never had problems with SB blue mist. Maybe the tobacco started going bad or something?
What was your set up? coals used and how many? bowl? etc.
I usually smoke SB out of my phunnel or large egyptian with 3 coconaras on the out edge of the bowl and it works out great for me everytime.
What i have found out though is that sometimes SB tobacco doesnt last very long after opened (i mean the flavor doesnt last very long, gets all weird tasting) so i usually try to stick with the 100g cans and that seems to work.
I have heard SB white peach is good though so i would say maybe give it a go. Maybe try the 100g can first and if you really like it get a 250g can next time