Right off the bat I know what makes the SS Head better for me than the titanium Tempest 2 I already own. I am 57 and have seasonal respiratory issues and can't crush it like I used to could. With the SS head I can heat it up to the 3rd/hottest notch (45 seconds at 70w YLL) take a sip of water before and between each draw taking up to five to six s/m draws and still be able to do a one heat extraction.
It definitely takes longer to cool off. It takes about 5 seconds longer than the ti head. This for me is good some days because I should space my loads out better to not trigger my allergies/asthma.
I don't have a body for it and tried and M7 and 2 cycles got untouchably hot as expected. The Vaphit X stem works pretty decent but it gets toasty after 2-3 runs. For now I have settled on the Vaphit WPA into a J-hook or a wet/dry mini cell water pipe. That is a banger of a setup for an affordable price. I leave the ports all the way open because the WPA doesn't have a carb. Works out perfect.