M601 vs M401 vs 510

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Hiryu

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Jul 3, 2011
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I can only speak for the 401 and 510, since those are the only units I've tried so far

On the 401, the draw feels a little tight. If you unscrew the battery just a bit, tho, it gets a lot lighter and for some reason you seem to get more vapor. May be just my imagination.

On the 510 it seems like a gentler draw, but there is still a bit of tightness to it. Hope that helps. :)
 
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