Front Suspension replacement

Since I know nothing at all about this topic, you'll have to make it pretty laymans.

I managed to grab some PDF's of the suspension of my SVX off the techinfo.subaru.com website. I put one of them (mainly just a stats table) for viewing here. http://aenslaed.mizery.net/frontsus1.pdf

Now here's the thing. My front left strut is cracked (and its making some pretty unsettling clack clack sounds whenever i hit a bump). Knowing the kind of cost SVX oem parts are, I could/would problably find something better aftermarket for a similar price. Here is where you guys chip in

What is a good replacement for the stock SVX suspension that is similar in price (I'll have to call up subaru on this). I dont want to alter the ride height of the car as it is pretty low as is. Maybe make the car a bit stiffer but not by much.

Any help is appreciated.

edit: I do believe mine is the LS-L model.

edit2: While on the topic of replacement parts, is the Master Cylinder for the brakes known to have problems? My brakes are so spongy :/