ipv4 does temp control but not as much wattage -- plus its a very new device so there may be hidden issues
Seg150 does more wattage but no temp control
the OLD IPV3 does 165 watts but no temp control
and the NEW yet to be released IPV3 will have temp control and more wattage than the
ipv4...
my only advice is order something that is readily available -- going on month 2 waiting for my Black IPV4 to be manufactured and shipped....