Need Reflector Help plz

I am about to buy reflector for my tent 120x120x2 (or 4x4) i am looking at 600w hps lamp and one or another reflectors ...
Hydrofarm Xtrasun LU84AC 8
Sunsystem Irradiator 8

Btw i live in Ireland ...so good reflector cost alot ...

I rock out with 2 xtrasun hoods. The 6 inch and I've been loving them

My opinion get one as big as your tent can handle. Throw as much light as you can as far as you can a smaller reflector will restrict the footprint a bigger one will have a much bigger footprint