Samsonas Universal RWD box would be cheaper and I've no doubt also stronger.

Samsonas sequential a little more expensive ( depending whether Quaifes price includes or excludes VAT ) and Samsonas has a much much higher rating.

I think the Tractives might be a little cheaper ? And again a well proven and very strong 2wd option.

I'd be choosing either of the above long before Quaife.