Conch and rook piercing help?

I am wanting to get my rook and my conch done. I am not sure yet if I want them in one ear or one in each.

It has been so long since I had a piercing I am out of the loop. I have been to 2 places, both were clean one is quite a bit cheaper $35 than the other at $50. I actually went with a friend while she got her helix pierced at the more expensive place. The guy did a good job, and the procedure looked sterile and correct.

I asked him what gauge he pierces conches at and he told me 18 gauge. Everything I have read say they are commonly 14 with a needle.

SO basically I have 4 questions. 1) how do you pick a place? Neither of them were too friendly about jewelry questions.2) what are the correct gauges for both conch and rook piercings? and 3) Why don't piercing places carry a larger selection of jewelry? If it has to be in for several months I want more than the standard stainless steel with balls. and 4) Do places ever let you bring your own jewelry?

Thanks!