With the quality of gear you have, you're definitely going to benefit from high quality cables. Blue Jeans are a very good value but not anything you'd want to to match up with the extremely high quality amp and preamp you have.
Try to get a bunch of cables from different companies on approval and compare them. It's all about synergy. They'll all sound different but only you can judge "best."
I ended up with silver cables from Gryphon, but they don't sell direct. Audioquest has great cables IMO but their direct price is the same as the dealer price.
I would definitely include Silversmith in the mix based on the comments here over the last couple of years coming from guys with very expensive amps.