Just throwing my hat in the ring... See sig pict below.
These aren't "hard" bags per se, but they are rigid and can be hard mounted. As for do they "flow"? Well... they're not swoopy, but they do *compliment* the style of the R*. As for price, you cant beat them at $109 on ebay. To top it off, they are the roomiest bags I found.
You don't sacrifice inner space due to cut-outs for support brackets. They are versatile with both hard mount or throw over options. They have an external pocket up front and four internal pockets, [one on each wall]; which come in real handy. Best of all, they come with a *life time warranty*! That's pretty hard to beat.
Originally, I wanted hard bags, but couldn't afford the good ones, and those I could afford, were pretty cheaply made and flimsy. Given the price of these bags, I figured I could get them for temporary use until I could afford the good hardbags later. But now that I've had these bags a while, I don't think I could give them up! I love that I can reach around and get something out while sitting at a light. And the amount of space is incredible! I've fit a tent and sleeping bag in *one* saddle bag, with room to spare. Try that with hard bags. ... Just sayin.