I am still low level (21 atm) but I have played healers in several other MMOs and I LOVE the BG spec! The heals that I've seen so far aren't very big, but the thing is I'm an Energizer bunny! I keep healing, and healing, and healing. As long as I group with competent people who know how to do their part so I can focus on the tank, I have absolutely no problem keeping my team alive. The key is to use Rapid Shots ALL THE TIME. It's a small heal, but it's instant AND free. Even when I've played in a group as a secondary healer with a sorcerer, eventually in a tough fight the sorc will run out of force. Ideally he would manage it perfectly but stuff happens and they can run out. I have not had a problem with heat that I couldn't quickly fix or learn how to manage better. I really look forward to end-game healing because this class is quite different from other healing classes I've played, and it's just plain FUN. If you're smart about your heat and you take the time to LEARN THE SKILLS I see no reason this class wouldn't be great at level 50. Maybe not number-crunching great, but it's a practical and capable healing class in the right hands.