as a bit of an industry insider, I can tell you the suggested brands are world apart as far as build and material quality go! While O'seas doing R&D for some suspension stuff, I was offered to buy a range of shocks from the same manufacturer as 'steelboy'

but there premium range! They were able to bargain @ sub $15AUD a pair...... As for the other brand in question (strongCat) They have done there homework over the years and have really got it down pretty good. The materials and manufacturing is excellent, little things like the material used in the foot valve which is 3 time the price of the cheap crap you find in some shock brands. I do know a lot more tech stuff about both brands, but will leave it at that cus it starts making one look REALLY bad!
HTH
Greg