You missed one very important point about rim-brakes. Namely that the quality of the pads used (I'm not talking old worn pad compared to new I'm talking about comparing two different pads made by different companies or different models by the same company) can make an incredible difference in stopping power that the brakes are capable of. With high enough quality pads you can get stopping power from rim-brakes that is nearly equivalent to that of disk brakes or with low enough quality pads you can barely do better then a junky coaster brake. Shop wisely for rim brake pads, one of the best steps you can make towards that is to walk into your LBS and ask the guys behind the counter what they carry for rim brake pads that will reliable provide the highest stopping power without breaking the bank. Bike mechanics are well aware that not all rim brake pads are created equal and a high quality set of pads that costs two to three times as much as a low quality set can literally provide double or more the stopping power and do so more reliably even on wet rims.

With rim brakes the quality of the pads make a HUGE difference, do not shop for rim brake pads just by price point !!!

Yes, you should most certainly take price into consideration and super high end pads that cost $60+ a set aren't going to be a whole lot better then high quality ones that cost $20-$30 a set, but the cheap junk pads that cost $15 or less a set usually have less then half the stopping power and may have almost no stopping power at all on wet rims. In other words you don't have to go sky high on the price but you don't want to be scraping the bottom of the barrel either when it comes to brake pads for rim brakes because the quality of the pads can make a huge difference in the braking ability with rim-brakes.