Depends on what floats your battleship. If you want a wide range of magazine choices, go for the Scar-L. I had a G&G Scar-L and currently have a VFC Scar-L and a VFC Scar-H. The G&G and VFC Scar-L took the same magazines no feeding issues. I used P-Mags, STANAG magazines and E-Mags in both G&G and VFC Scar-L's no issues. VFC has considerably nicer externals (in my opinion). The bolt on the G&G sounded like pinging a tin when releasing the bolt. Rather pathetic and toy sounding. The upper receiver in FDE is also wank to be honest. More glossy than matt.
Now, if you want to look meaner, the Scar-H is your Arnold Schwarzenegger airsoft equivalent. If you don't mind a 7.62 load out (less commonly seen which is always nice to be different) then go for it. I don't think G&G do the Scar-H. Only VFC, D-Boys and Tokyo Marui do as far as I'm aware.
D-Boys is intermediate junk for beginners. Internals are made from paper cutouts and the exterior is plastic and pot metal, yuck. Tokyo Marui are obviously the best, but for a price little want to spend. So VFC would be your best option. Not forgetting you can slap on an SSR rail kit and a longer barrel and bish bash bosh, you have a pretty sweet looking VFC Scar-H SSR.
It's really down to you. It's between the G&G Scar-L or the VFC Scar-H.
The Scar-L will;
- be easy to obtain a wide range of common 5.56 magazines.
- accepts standard M4/ M16 hop up chambers (madbull ultimate, metal hops etc...)
and that's really it.
The Scar-H will
- look much meaner
- easily made into a DMR which actually looks like a DMR (not some 5.56 with a rifle scope disaster)
- bit more unique
- stands out from the typical 5.56 guns (M4's/ M16's and obviously the Scar-L etc...)
However it's not all sunshine and rainbows. The VFC Scar-H has a unique hop up and unfortunately there aren't any metal replacements in the market (yet). Not forgetting you'll have to adapt your load out to accept 7.62 magazines however you can pick up a 7.62 double fast magazine pouch for under £10. The VFC Scar-H takes D-Boys magazines no problem so you don't need to pay £20+ a magazine luckily.
Hope it helps and if you're after the Scar-H I have one up for sale. I can also give you a dark earth 7.62 double fast magazine pouch free as it's the only 7.62 gun I have.