Hey,
Welcome to the board.
Just curious, what's stopping you from looking into it with Canadian Connections or the Jeollanam-do Office of Education yourself? Have you completed a B.A. (have to ask, I know TaLK was hiring college students before). If so, there's certainly no reason why you shouldn't want to try another program and another salary.
Way back when I signed with Regional basically because it had an extra week of vacation and it meant I wouldn't have to do teacher training courses at Damyang during vacation. I'm not sure if that's still required because they started keeping people at JETI full-time. I also lucked out because I wanted to move to Suncheon after my first year in Gangjin county, and the opening there was in the Regional Program. For some reason it's hard to switch beween JLP, JCP, and Regional. As far as doing a side-by-side comparison, I don't have all the numbers in front of me now, and not sure if they differ much these days. I do know that when I sent an email to Canadian Connections they explained the difference by actually sending a side-by-side comparison of responsibilities, salaries, and vacations.
As far as choosing individual schools or accomodations, who knows. You give preferences for location, and CC at least will try to place you there. If you happen to know a particular school that will have an opening, it wouldn't hurt to bring it up. I remember back in 2006 the cities like Suncheon, Yeosu, and Mokpo were in high demand, meaning veterans were given first choice of those jobs, but I have no idea if the demand has since exceeded the supply.
I think I'd pass on EPIK if I were you, for a couple reasons. One, it's not connected with the local school board here, meaning Andrea (or whomever is in charge) has no idea what's going on with you, your school, or your contract. Two, from what I understand you can't pick where you end up. Three, EPIK has a history of bad reviews. Sure, like everything else about working in Korea "it depends," but why work with a company with such a poor track record.
There are two other options you might look into:
* JETI - the Jeollanam-do Education Training Institute. This is the facility that has intensive, English-immersion sessions for Korean teachers. If you are interested in working with adults, this might be a good fit for you. I know they were offering a higher salary that ordinary public school jobs, but they may also require more qualifications. It's located in Damyang, which many find rather isolated if they didn't do their homework about the area, but you're probably familiar with that by now.
* City Hall jobs - I know in Suncheon, and perhaps in other cities, there are jobs that operate out of city hall. As far as I understand it, they farm you out to various libraries and community centers around town, and you'll teach all ages, from pre-school through adult. The salary and accomodation is similar to ordinary public school jobs, and in fact some teachers in this program have been working in public schools because of a lack of teachers. They never seem to have enough teachers for the city hall program---poor advertising it seems---so if you were set on living in a particular city, but can't get a position through CC, this might be an option. I know a few people working in this program, and if you think it might be something you'd like, I can send you more information. Google around for job ads.
Good luck, and I hope some others can contribute more information. Like I said, and like you probably know, so much about working in Korea can be summed up with "well, it depends" or "sometimes it's good, sometimes it's bad."