The GGTB is meant to be a smaller, cheaper, and simpler version of the GGTS, but when you'ev got a Stealth cap it becomes unnecessary. 18350 (superior to 16340/CR123A) is the base battery, add a telescope to that and you can use an 18500. At that point you're already above the GGTB mAhWise. You put a top tube on and you're rolling with 18650/Stacked CR123A for 6v. I personally think the Stealth has replaced the GGTB as the entry level GG product.
not sure what you mean?