Pining for Panniers

My Pashley Princess is undergoing a little make-over and, among other things, she will be getting panniers for her rear rack. My criteria for the panniers, are that they be of a classic design and colour, water resistant, connected at the top so that they hang over the rack (rather than two separate bags connected to each side of the rack), easy to open, fairly compact, and fit my 13" Macbook (sideways is fine). I have narrowed it down to the following:

[image via bikebarn]

Brooks "Brick Lane" roll-up panniers. I have been eying these since before I bought my Pashley last year, but haven't been able to afford them. The panniers are waxed canvas. They roll up tidily when unused and expand when needed. They look gorgeous and come in a "moss" colour that makes me weep. I have read reviews describing them as the best panniers ever, and I have read reviews describing them as impractical and too small. Retail price seems to be around $250.

[image via Basil]

Basil "D'azur" double-bag. Less than half the price of the Brooks roll-ups (around $100 retail), these look classic, practical and low-key. They are not compact and will stay 3-D even when empty. I have not found any reviews of these; they may be new.

[image via Rivendell]

Rivendell "TourSacks" rear rack panniers. I was so excited when Rivendell announced their plans to manufacture these, and now they are finally available to order. These don't roll up, but they will stay flat when empty. The price is around $200.

[image via Wald]

An alternative to the panniers are these Wald folding baskets for $40 per pair. But I am just not sure that these will suit the Pashley. I was hoping to try them at a local bike shop, but no one seems to have them in stock this summer.

So, what do you think? If anybody owns either of these and has any words of wisdom from experience, please chime in. Also, if there are other panniers out there I've missed that you can recommend (given my criteria), please let me know. I don't want to buy a set of panniers just for the looks, and it's so hard to know what's what based on pictures and online descriptions alone.