if you want a simple nice looking atty that is good with flavor and no frills airflow, but still a tight draw, this one is good too - I have it and it's one of my favorites
SOD 5K Atomizer Clone (No Logo) by SXK - Eciggity
comes with two topcaps, one airhole and the other topcap has 2 airholes.
id highly recommend that rda for any beginner over a magma or igo-L any day. Its not a cloudchasers dream atty with giant widebore driptip or massive airflow - you have the one hole topcap for mouth to lung inhales, then the other one if u want it a tiny bit airier. It also uses 510 driptip so u can use any driptip u want on it. If anything Id recommend trying that one next if you are looking for a new RDA to try soon, I think based on how you vape that will be a nice fit for you.
also the magma, i dont know why people always suggest that, anything with deck airholes will leak i dont care what anyone says. The tasting like metal could be due to poor craftsmanship if you bought a magma which im guessing you did, because authentic magmas are 100$ and you said you had several of them lol. Tasting of metal could also be due to the wire.