Hi there. "Burn time can be doubled by using Lithium Ion batteries or rechargeable Ni-MH batteries". This is what is stated for the PIXA 3. Does this mean that the normal PIXA 3 will actually outperform the PIXA 3R in terms of burn time if rechargeable AA's are used? The only slight advantage (3R) in terms of performance would then be the standard, efficiency and power settings the 3R has plus the ergonomic advantages of the dock charger and not having to take the batteries out to recharge. Thanks, Immo