Just wanted to point out a few pros and cons.
M401 auto batt and PT:
M40x is great for hands free vape since it is light as a feather.
M401 atty draw is tuffer than analog; only complaint.
M401 performance is good if direct drip.
M401 PT is very durable and light; performs well except for tuff draw.
All M401 hardware stands test of time.
501:
Good performance.
I couldn't get used to tip heavy design.
Stockpiled batts failed after about 1 year.
Atty is durable.
Roughstack 3.7v:
Nice and only $40.
Not hands free.
Small; body is 2.384" x 0.963".
Light; 62.1 gr (w/ batt, w/o atty).
Sits very stable on table.
Fits nice in pocket.
User serviceable switch.
The un-tumbled version looks nice.
I really like 306 atty and drip tip (1.15").
Performance is great.
Roughstack can process high current created from 1.7ohm atty.
I really like 1.7 ohms atty at 3.7 volts.
The Roughstack performed as I expected and the untumbled version looks far better than expected.
M401 auto batt and PT:
M40x is great for hands free vape since it is light as a feather.
M401 atty draw is tuffer than analog; only complaint.
M401 performance is good if direct drip.
M401 PT is very durable and light; performs well except for tuff draw.
All M401 hardware stands test of time.
501:
Good performance.
I couldn't get used to tip heavy design.
Stockpiled batts failed after about 1 year.
Atty is durable.
Roughstack 3.7v:
Nice and only $40.
Not hands free.
Small; body is 2.384" x 0.963".
Light; 62.1 gr (w/ batt, w/o atty).
Sits very stable on table.
Fits nice in pocket.
User serviceable switch.
The un-tumbled version looks nice.
I really like 306 atty and drip tip (1.15").
Performance is great.
Roughstack can process high current created from 1.7ohm atty.
I really like 1.7 ohms atty at 3.7 volts.
The Roughstack performed as I expected and the untumbled version looks far better than expected.
