I have tried a bit of both (only to G2 so far) and both seem to improve boost speed, and have some effect on mass and power usage. Can anyone explain the actual benefits of each type, as I can't seem to find a definitive answer in straightforward language .... and a single paragraph type of answer .... All explanations I've seen (so far!) seem to go on a lot about various factors. A simple one (or two!) line answer explaining the difference would suffice! Thanks.