LOL... underwear fund....
I've got a total of 8 DNA boards coming, 1x 25x 4x 40 small and 3x 40 large. Plus I bought a dna40 small on the classifieds about 2 weeks ago. 2 of the small 40s are going in my 2 Flasks, one for me the other for my wife who commandeered my first flask the SECOND my new one came in from China, it was funny... She obviously wanted it she never does stuff like that.

and I've got 2 adult sons and a daughter in law (3 grandkids and a partridge in a pear tree). 1 son wants the 25, my daughter in law gets a 40, and the other son says he doesn't want one but I know he does

now to answer your question, all the new incoming 40's have the atty lock feature, the 25 does not and the 40 I got on the classifieds does not.
My temp control journey started out positive (I thought) but I jumped the gun, the more I use it, the more I realize the vape is way less intense and less hot than kanthal. I feel the reduction in heat is causing me a loss in flavor, that may be a placebo effect and I'm man enough to admit that. I'm not use to this Insanely "cooler" Vapor. The titanium wire is Absolutely more durable than ni200. It must get hotter which is why it's suggested to run the Ti about 100f lower than nickel, so 450f ni200 should equate to 350f'ish on titanium...
I've never been a specialty coil builder, I play like I'm sure every one does or has done at some point, but I don't routinely want to twist, clapton, or zipper my Coils [emoji14] about as fancy as I get was parallel wrapping duals on a single screwdriver... And even that wasn't regular but I did more of those than anything else beside standard single micro Coils.
I just can't get the heat from TC, even at 600f! Yes I've tried 600f. And that's just a burn taste almost immediately.
It's just frustrating when I want to vape and what I get out of my favorite tanks (squape Reloaded and taifun gt2) is unsatisfactory. Especially since I KNOW what these 2 tanks are capable of. These 2 have pretty much shelved the rest of my attys.
And I can't figure out what I'm doing wrong!? Everything looks good, numbers are where they should be, settings seem correct, but the results are not what I want.
The only positive I can take away from this at this point is, I tried nichrome a long time ago and it really bothered my throat. I was worried ni200 would do the same... It doesn't. So that's good. But as of today, that's the only good.
Ti wire from the ring Lord is cheap... Under $3 for 25' CP grade 1... Packaging leaves a lot to be desired but the wire itself is fine (or seems fine).
Sorry for the long winded post, I'm just so frustrated with this all, and I've invested in this before I should have so that makes me even more frustrated. I should have stuck to my guns asking "why is temp control any different from vaping at lower power settings".... The answer is, it's NOT.