I understand your point & agree that a mech's best qualities are utilized when used with an RDA. I also agree that with toppers using replacable coils (ie kanger) their best performance is on a regulated device. HSAT I don't like to see a new poster come to the forums asking for help with a legitimate problem & then get feedback telling him he's using the wrong stuff. I mean, if he were using the wrong battery that would be one thing. But I'd prefer to see the user get what he has working the way he wants so he can come to his own conclusions about what he likes using & what works best for him.
I use 1.2-1.5 ohm coils on a mech all the time & I'm perfectly happy doing so. And no, I would not buy a "tournament mod" to use on a protank. I've never used a protank. In fact I've only use a handful of clearo tanks ever in my vaping journey & I only used those because rebuildables hadn't been invented yet.
Ok, I'm sorry if I came out wrong, I just wanted to help.....VAPE ON...