I still remember when a couple buddies of mine had a "24-hour race to level 20".
I just hit level 20 in about 5 hours (with BoA gear out the wazoo) - and I'm sure it could have been done much quicker if I would've had RAF.
Part of me hates it, but the other part loves having 4 85s (and another on the way!) and not having to worry about such a crazy time-sink to get them there.
got from 1 - 60 in under 12 hours played time
think it was around 8 ish.. i had 15+ because i play around in the AH a fair bit haha
but yeah only leveled with him. just quests and instances... then got to 60 like ahh crap.. and got bored of that char. so went back to my old one haha and leveled it up a bit