The C10 would be more desirable for more people, and hence will be easier to sell if you ever need to, but the long beds are a distraction, IMO.
The real question is for you to answer, only you know these trucks and know what appeals to you. You didn't post any pics, so hard to see the condition of them, if they're sitting on flat tires with crapped up rims, or have holes rusted through the panels or if the glass is all blown out. Even hard to know what you want to do with it, you say daily driver of 20-30 miles a day, do you need to haul tools? Are you planning to customize it or keep original? Work truck or just a driver?
At the end of the day you only need to please yourself, so no matter what me or anyone else thinks it's really up to you.
