Hi All, I'm brand new...but read the first 90 pages of the thread between last night and now so feel like I "know" some of you already

I've been doing my homework and even taking some notes. Hoping you won't mind a true newbie question as I prepare for my first RDA purchase.
Background - I mostly use my regulated hexohm 2.1s. I have a snow wolf 1.5 I still use too. So far I've collected way too many subohm
tanks always looking for the new best one. Never had an RDA. Never built
coils. I've been watching tons of videos and reading online - but still a total beginner. I actually have someone sending me a troll clone with a build in it next week (so nice of them!)
I know I prefer flavor above all else. I hate leaking! (who doesn't). I think (but don't know so please advise if I'm wrong) that a 2 post design might be best for me as it seems easiest. But I do have a few 3 posts on my "maybe" list. I plan to use a single horizontal coil at least to start since it's all brand new to me.
I definitely want easy to build on (that's really important) and learn on since I'm an absolute beginner. I don't mind spending a bit for quality. But not $100+. I want to be able to use my 510 drip tips as an option. My list of RDAs being considered is really really long and I'm not getting too far narrowing it from here.
Dot Mod Petri
Sapor Wotofo
Freakshow mini
Hobo 3.1
Rogue
Kennedy 24
Tugboat V2
royal hunter
Stro Mini V2
Manta (V2, I think?)
Stumpy
Mako Shorty
Vector
Not sure if these are all still readily available thru online retailers. If not, I'd rather take it off my list. I'd appreciate any and all input and advice. Please chime in if you see anything I should eliminate or any you think are really the best choice(s).
I'm not trying to be lazy. I'm still reading and researching but it's a bit overwhelming.
My wishes are:
as easy as possible for a newbie
good or great flavor
not super prone to leaking
can use 1 horizontal coil
ability to use my 510 tips
Thank you so much for anyone with the time and patience to advise me.

It's very much appreciated!