It's a JG AUG rebranded as snow wolf.
Any good in what way?
If you mean compared to other brands - TM are the best out of the box but you will pay tripple the price of that one.
APS and JG are almost equal with a slight nod to JG. The JG has a marginally faster motor, and a better stock piston head.
Body wise all of the augs are near identical, JG and TM use identical bodies, APS use a slightly different one with a raised pistol grip and body area.
To use, that model is the best current variant. It has the best rail position and front hand grip options. And the QC spring. Provided you get the short variant. The one you have linked to is the long variant with the A1/A2 hand grip.
The A1/A2 don't have the solid front hand grip. The A1 has no rail, the A2 only has a short high rail
The A3 is badly balanced, and looses other features like the tool-less barrel swap.
The Phantom/sniper variants are all stupid long, and generally have cheap junk extras, like crap scopes and bipods that don't offer the gun anything.
Augs are not like M4's. Nothing is bolted down internally (it's designed that way). They have an issue with BB's getting into the body on mag swaps that can be removed with some shimming. The battery compartment is small but will take a 7.4v 30-35c 2200mAh block in most cases.
The dual stage trigger can be sorted so it has a single only position with basic tools.
Out of the box the JG guns generally arnt' that bad. Cheap upgrades work with them, And the gearbox is solid.
A standard upgrade path would be:
ZCI stainless inner barrel 450mm (509mm is stock you want it slightly shorter). £25
Decent bucking (maple leaf ect). £15 with omega nub
Mosfet. £15
Shimming.
As a gun there noisy to the shooter:
So optional upgrades are a silent piston head and cylinder head (plastic type are quietest Element ect) SHS bore up kits with the silent heads are also an option but they have more weight in the piston and will slap but not as badly as a flat alu piston head.
The JG is a decent out of the box gun, but there is a lot of room for improvement with upgrades. The BB's getting into the body can be frustrating but you can live with it if you love the platform.
Speaking of the platform the AUG is a tweakers wet dream. V3 boxes are fantastic to learn on, and putting in a fet is easy as all the wires are external. The gearbox is removable in about 60 seconds. The hop is one of the better AEG designs, and the barrel/hop are removable without having to strip the gun. It makes for a platform that saves a lot of time if you like to play with different internal options.
This is the model I would buy.
https://gun-fire.co.uk/product-eng-1152215959-SW-020T-Carbine-Replica-Tan.html
Everything above applies apart from the barrel length for the upgrades. It comes with a 320mm inner and can be left stock, or upgraded to the ZCI 320mm.
You can see it has the more solid hand grip, but still retains all of the features of the longer variant. If you want to have the long barrel, then I would suggest a 2inch barrel extension and a suppressor to make up the length difference in the outer to 450mm.