The RH ones look slightly more modern with more of a "clean line" appearance. The Pulls Direct ones are slightly more decorative.
So I think it depends on the style of your kitchen. If it's more modern, RH. More traditional/transitional, I'd go with the PD ones.
Your kitchen sounds lovely. Would love to see pics!

They are both beautiful! Just something to think about -- we have had bar pulls before (ends sticking out further than the attachment points) and my husband has requested me not get them again. The ends caught on his pockets. So from that standpoint, the RH pulls would be preferable; just depends on whether this is a concern for you as well.

Restoration Hardware

Top Knobs Dakota

For the reason Northcarolina mentioned, I would go for the RH pulls. I have their Aubrey pulls in polished nickel so I can vouch for the quality. There may be a 15% off sale still going on now, but can't remember for sure. If not, wait for the next sale in a couple months if you can. No need to pay full price!

Northcarolina's reason is exactly why I'd never go with bar pulls again. Had them in my old kitchen and, not only do they catch cords, but ripped the pockets on two pair of pants. I couldn't wait to get rid of them. Another vote for the RH pulls.

Ditto - I was thinking of them and talked to a friend and he has caught his pockets several times. So I went with arch style pulls.

I've ripped several of my favorite clothes. Never again on bar pulls!