If I am wrong, I don't mind correction but it seems to me that it has been said the penstyle has a longer lasting cart and battery than the 901, but the 901 seems to have more vapor. If this is true, why does it seem the 901 gets more promotion for beginners than the penstyle? I mean, if your priority is vapor, then I can see that but cart and battery life must be equally as important. I just wonder why they don't seem to get the same "billing".
Lu
Lu