Wish I bought this years ago! Can actually use my phone and iPad while charging. Was not a big deal with the phone, but really helped with using the iPad. Thick cable and high quality.
http://store.apple.com/us/product/H1826ZM/A?fnode=MTc0MjU4NjE&mco=MTg3MDQzOTM
http://store.apple.com/us/product/H1826ZM/A?fnode=MTc0MjU4NjE&mco=MTg3MDQzOTM