I'll put it like this. I like a good value. That's price + utility and in the case of tobacco, utility is enjoyment. Price alone isn't a good enough reason. Buying cheap just because it's cheap rarely leads to a good end. When I buy something I buy excellent quality. It always translates to good value for the money spent. The quality of many of the Sutliff bulks is really pretty good, and the prices aren't high and there are a couple of C&D bulks I like and stocked, though I generally don't buy C&D. But I wouldn't buy any of them in quantity without smoking them first to see if I like them.
The other factor is that tastes change. I've got poundage of English I'm not currently smoking because I burned out on Latakia. I've only recently returned to smoking a bowl of English every once in a while. But I bought when I was still smoking English daily, and I'm not likely to use it. But, that could change and I could return to English. Or I might burn out on Va/Pers. Much as I love them, I find it necessary to occasionally take a break from them.
So at least buy what you really enjoy smoking, and if some of these is relatively inexpensive bulk, good, but buy what you really enjoy smoking.