WHAT SHOCKS TO BUY: KYB VS Monroe VS Bilstein's

I going to have to do some checking on my Valiant, the front shock body is 9 and 3/4" to the bolt centre. I would guess that with my cut down factory stops I would be getting close to bottoming on the shock.
I could make a barrel for the bayonet end to move them up into the engine bay if they do bottom....