Rather than starting a new thread I thought I would hijack this one:
While struggling to decide which pannier bags to buy, I put together a fancy excel spreadsheet listing all the options I was considering. It takes into account the model, whether it is sold in pairs, the volume in Litres, the weight in Kg, the price in CAD$, the material, the bag features, whether the bag is top or side loading, and the complete range of colours. There is a mouseover popup for each bag that shows a detailed picture. These are all in a pivot table and can be organized by any category.

At the moment I only have the MEC and Arkel bags as they are both Canadian made and priced. I am currently working on getting the Jandd bags up and I am trying to find a reasonable CAD$ price list for Ortleib and Vaude. Any others I am missing? I will make this list available as soon as it is comprehensive enough to be useful. I may add on racks as well.

Eventually I would like to create a system where you can add different combos of front panniers, rear panniers, frame packs and bar bags, and have it display the total volume, weight and cost. I'm only bothering with real touring panniers and bags, not little seat wedges or commuting panniers.