IMR batteries are the definitive high drain. You have to go by charge capacity. For the IMR batts, it's 8C or 8 times the charge. For an IMR 14500 with 600mAh, max drain is 4.8 Amps. For an IMR 18650 with 1600mAh, max drain is 12.8A.
The Panasonic NCR batts (with the long chemical name) have similar charge density to that of lithium polymer or LiPo. Since LiPo batts are not currently available in a round cell, the Panasonic NCRs are the highest capacity round cells out there. I believe AW's 2900mAh 18650 uses the Panasonic NCR cell. However, they're not particularly high drain. Although safter then ICO cells (LiCo), they should be used protected. They have a max drain of 2C or 5.8A. That's a little low to use in a booster mod, but may be okay. You'd have to try them. It's actually not the constant draw that's a problem. It's the surge currents that occur during booster startup that can trigger protection.