i think flavor relaly just has most to do with your setup in the rda. I have a cloned mutation X and really cant tell any difference in performance between the original other than the clone not having the printed on side logo. I get good flavor if i close off the airholes to just one hole, but the more you open it up the less flavor you get. If you are going to be new to RDA's I would suggest looking for one with good airflow options. The first RDA i bought was the iGO-L i believe it was, which only has one 1mm sized airhole which definitely was not enough and it heated up the whole RDA so much, produced crappy vapor, i just tossed it in the trash after a few days.
if you want to not worry about leaks then id suggest not going for a plumeveil, or if you get one make sure its the updated plumeveil, the old plumeveil was a horrid design with airflow holes in the bottom of the deck where juice would just leak out of constantly. eciggity has some nice clones on their website and they have always been topnotch quality, in my personal opinion if it has all the quality and functionality as the authentic id rather save the money, im not ashamed of being thrifty, especially since some of these authentics have outrageously inflated prices in the range of 120$+
https://originvape.com/product/cigreen-x-rda/
this is the one i been using for a while, has double positive post holes for easy building. the topcap is a widebore though so it wont fit 510 drip tips. Love this atty and it was only 26 bucks.