I use Vampire 4400 saddles in my B44...cheaper than the £100 you mention and been spot on for me so far! And stick packs don't fit the B44 at all so it's just a case of finding one of the many options at the right price.
Come along To Caldicot and say hi! We can do all this in person with the real thing in hand before you commit your money. Your doing the right thing so far, and it'll save you cash to get it right first time! I'm not about this week as it's nationals weekend, but many will be, and I will be next week...in fact we're doing an all day race day next Friday (22nd) since it's a bank holiday, anyone is welcome be it to race or watch and chat!