I had a c-section with my first due to my pelvis being too narrow, he was 8 lbs 6 oz. Our second baby was due exactly 2 years after the first (to the day), but I unexpectedly woke up in the middle one night with contractions 3 minutes apart and spotting (bleeding) at 33 weeks, 4 days. We went directly to the hospital and they couldn't stop the labor, so I had him VBAC. I had already scheduled a c-section because our second was supposed to be bigger than the first, but since he was so early, he was only 5 lbs 7 oz, so it wasn't a problem laboring with him. I didn't have any problems during that pregnancy either, other than the obvious pre-term, which has nothing to do with having a previous c-section. This time around (I am currently 25 weeks pregnant and the baby is due 2 1/2 years after the second was born), we'll see how it goes. I have gained a lot more with this pregnancy unfortunately, so I am planning on a c-section unless I go very early pre-term again.
All that being said, the main thing that should be considered is why you had the first c-section. If it was because the baby was breech or something that was a one-time occurrence like that, I would definitely consider a VBAC. It was AMAZING how much easier the recovery was with the VBAC (I was walking around within a couple of hours with that, as opposed to a couple of days with the c-section, and I am in pretty good shape). Plus, nursing was much easier with the VBAC. However, if you have a problem like mine where your pelvis is too narrow or something else more permanent, a c-section is probably the way to go. I know Professionals for Women's Health does VBACs (that is who did mine). I now have switched to Crosswoods Women's Health, who also does VBACs. There are some practices in the area who won't touch them with a ten-foot pole, so you be sure to check before you get pregnant if they will do one for you or not.