I'm gonna break this up to answer (best I can) each question.
Many thanks for your pics and suggestions. I loved my little 900 mah batteries with my little CE3 bottom coil clearomizers. I'm not a vaping monster so actually a 900 lasted me all day, and I would recharge it overnight. I can't seem to get fired up over the mods. I want something that reminds me of smoking a cigarette not smoking an actual cigarette pack...lol. I found this nice little set up that I may invest in once I get back into the groove of things...
Kanger EVOD 2 Starter Kit
That's a nice kit and several people here own one or more. Here's the same kit for a good bit less.
Kanger EVOD PRO V2 All-in-one Starter Kit
There's nothing wrong with a long cylindrical kit if that's what you're interested in. They're actually very good performers and mimic cigarette smoking. Almost all of the larger manufacturers offer at least one. It's all about personal preference.
Okay, I spoke (wrote too soon) I thought a "mod" was the name of the little square batteries. But then I looked at the Aspire one you referred to that is on sale, and I don't understand the difference between that an the Joytech "spinner" I have that is a 900 mah and has the variable up to 480. Is it just that the mod has a longer lasting battery, but the variable settings are the same? What would you use for a clearomizer--could I use the kanger or I'd really like a pyrex one or as you said I could use any ego compatible clearomizer.
The term "mod" came about when people
modified other devices to build their own e-cig. The term is used to describe almost anything other than the thin, pen-like devices you have. The CF Mod I linked to is thicker, about 7/8" diameter. It takes an external battery and you'll need to buy separate batteries and a charger for them. The batteries (you'll want two) and charger will cost more than the device.
It has threading for tanks like yours and mine. Yours are eGo threaded. Most of mine are 510 threaded but I have eGo toppers, too. That CF Mod takes either.
I did just find this article that was published just this past March which seemed right up my alley.
Best Atomizer Tanks and Clearomizers of 2017 , but the mod thing has confused me. What about sub ohm, throat to lung experience--ah gawd! Is this a much better deal than that starter kit I listed above? I have to go back and reread your post....
Read top 10 lists with a grain of salt. A lot of those articles are "sponsored" by manufacturers to gin up sales. Doesn't mean its not good gear. Just that the objectivity is... well... maybe there, maybe not.
In time, you'll get the hang of the lingo. It's not hard.
MTL - Mouth to lung, like smoking a cig
DL - Direct to lung, like inhaling through a straw
sub ohm - coils with resistance less than 1.0 ohm. Need experience before delving in