Opinions on B&W 801F, prior to Matrix and Nautilus

Need advice. I have an opportunity to purchase a pair for 1300$ but I read their bass is overwhelming and it requires a monster amp. Alternatives are Monitor S6, Thiel CS1.6 or Wharfedale Diamond 9.6, all new. I can afford a pair of Vincent SP-997 monoblocks, a NAD C272 or a Quad 909 power. This is for a first generation model 801F, not the Matrix or Nautilus versions. Suggestions welcome.