??????
I've never heard of a 306 tip melting... however if you shove them down hard enough they can crack up the side.
No experience with a metal 306 tip, I just have a couple plain-jane black ones.
I haven't really used 306's with my Reos, honestly. The RM2 is too much awesome sauce atop the Reo for the 306 to compete.
I do however still love to drip a few flavors on 306's every now and then while at home watching tv. I just got a super cheap ($50) and tiny 14500 VMOD I plan on putting 306's on to have just laying around on the coffee table at home.
I'm totally remembering you now from the general forum. Congrats on making the move to Reo BTW.
Might I suggest you initially purchase both a 306 and a 510 atty and then decide which one you prefer?
I prefer the 306, because it's warmer and has a more exaggerated flavor to me. Some people prefer a 510, as it is slightly more convenient. No fussing with drip tips and it generally holds a bit more liquid before having to drip again.
Cheers