better to invest pa rin sir sa mga trusted brands lalo na sa mga moving parts like springs.
true, malayo ang price difference nila (maxspeed is around 4-6k yta? versus say H&R na around 12-15k) but that price difference will come back to haunt you. maiinis ka lang katagalan dahil di maganda ang ride and you'll probably end up selling that cheap brand springs again kasi di ka masaya.

think of it sir as an investment for your ride comfort, whatever it is, you can't go wrong with that