It is very customizable. You can use cartomizers, atomizers or clearomizers with it.
I have found the atomizers the best for me. I use the type "B" tanks. They sell rubber caps to go with the tanks...I'd recommend them.
5 for $2 or something. They seal around the metal spike in the atomizer better and longer than do the hard plastic caps that come with the
tanks.
Clearomizers are good too...but they really are one flavor per clearomizer. You of course can refill the clearomizer...and indeed need to do so before the
tank gets below 1/4 from being empty...but because of that...you really need to stay the course. A atomizer has a tank insert that can be vaped until 5% left...washed out and then refilled with any flavor you desire.
I too am a ego t user. idk about Dallas...but there are a good number of quality shops online that you might want to check out.
Delivery times are usually under 4 days. Prices obviously vary depending upon seller...but I found them cheaper online than in a traditional store front.