Not sure if they will offer it again, but at the end of last year they had a special transfer rate of 1:1.5 to Plenti rewards - I got the 50,000 bonus for Premier Rewards and 10,000 bonus for Blue Every Day and ended up with nearly $1,000 in free gas at Mobil/Exxon stations. You can only use it $25 at a time, but my little car never uses more than $20-$22 per fill up. I have used that for free gas for over six months and still have $75 left. Definitely was the best value per point (1.5 cents per point) that I found. I am gradually building points back up and will hold on to them to see if that offer comes back around.