ECN Help Please

So, I just got back into trading and I forgot the best ECN's to use. I trade on Laser platform, Right now I am trading stocks like GE, PFE, MOT, LUV, etc,
I like to bid and ask but also like to buy and sell at market price sometimes. Which ECN's should I be using for bid/ask and buy/sell ?
INET, ARCA, BATS, EDGA, EDGX, NQBX ?
 
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