I think it's the Omega and Alpha from Altsmoke that are the top cap switch mods, the Megalodon is one of the locking bottom button mods and of the three I've tried so far I think the Don's button is the best thought out.
The iAtty2 and other GG goodies should be in stock sometime in November but you can find one or two in the classifieds every week. The iAtty is a bit more fiddly than the other rebuildable attys but it's doing good for me so far. I really like the A2 as it's the easiest to rebuild and get going. Then there's also the ScubaGen V3 and the new coop about to start for the DSU by ScubaBatDan, check the ScubaGen thread out but be warned they're serious techie types over there and it's way above my head, the A2 A2-T and A2 MegaT should be back in stock by the end of the month, there's the Genesis Mini that's about to go into a coop out of Romania soon, and I'm sure there's a few more floating around the threads here on the ECF too that may interest you.
Now if you're getting into mods like some of the rest of us you have to read up on the REO line as it's just about the most versatile self contained all day mod going, there's also the VMod which is similar to the REO but cheaper and uses the new hybrid bottom feed attys, the Precise 10440 16350 and 18650's are perhaps the sturdiest mods out there, the Galileo is a fiddler's delight and if you like fiddling with your Don you'll love fiddling with a Galileo, the GLV mods are the best feeling mods I've tried yet and I absolutely love the GLV Super Mini (especially with an A2), the Provari is hands down the most versatile mod but a bit heavy for me, the Darwin is right up there with the Provari but the only tank you can use on it is the A2 it's more of a dripper's nirvana, and then there's the GG line without a doubt the shiniest things around and the ultimate fiddler's delight. But if I was forced to choose just one or two mods it would have to be a REO Mini and the Megalodon. But since I don't have to choose, I want them all, as long as they're metal and mechanical, with the exception of the Provari and the GLV which has one little wire even I can figure out how to re-solder if anything goes wrong.
Oops, for 6v 2 AW LifePo4 3.2v batteries in any 18650 mod will bump you up to 6v and the Provari has a booster of some sort that will bump up the power from the 18350 or 18650 batteries. Because of what I do I stay away from plastic and most electronic mods as I'm out in the middle of nowhere most of the time so I need mods that I can fix with what's in my pockets if anything goes wrong so except for the Provari I'm sticking with mechanical built like tanks mods.
I'm verry glad you like your Don! What batts are you using? What carto?
