To be absolutely honest - there isn't much in it....
Sometimes Taiwangun do better deals
Gunfire when they have offers on it becomes oooh I gotta get that coz its a really stupid bargain not to
In my mind - when you get stuff at a crazy price you have to consider the odd time things may require a bit of work
though free spring downgrade is good if you don't feel confident
Some stuff is really good, some is alright
Some parts - some are better than others
a few parts from TWG were supposed to a certain brand but as they repack a lot of bits into bags for transport
sometimes - maybe once or twice I wondered if they really were what they said they was in description....
Most of the stuff is very good, a few things I'd never buy again but can't grumble at daft price I paid for some bits
Guns overall have been amazing but they don't do cheap G&G's - my G&G's all came from UK retailers
But think they will accept stuff back if it is really shagged
but me I normaly break or rip stuff open with 15mins of it arriving anyway
Both TWG & GF are both good sites imho, GF are bigger of course
with any place you need to do a smidge of research before getting carried away
This is what places like AF-UK & Google are for
Happy Shooting