There is no "best" SCAR-L. You will get a lot of varied opinions from all kinds of people.
My personal experience: my teammates and I have owned three G&G SCAR-Ls. All of them were quite excellent out of the box. Eventually they all got upgraded and they are beasts.
You hear a lot about G&G's quality control being hit or miss, but in my community the G&G SCAR-Ls are batting 100%. They were all made in different years, so it's not all the same batch.
I highly recommend a G&G SCAR-L.
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