I would insist on Bilstein or if you want to save $$ Sachs-Boge. Don't except KYB, Monroe etc.

Your car has struts on the front. Mcpherson generally refers to where the coil spring is over the strut. You don't have that.

The rears are just shocks- With a floor jack, and minor tools you can replace the rears easily. Fronts take a bit more care. Front and Rear you need to be careful as MB springs are strong and can easily kill you if they get loose.

The factory Bilstein's rarely fail (so I'm told)- you might get away with just replacing the rear shocks.

If you do the fronts, you should replace the upper strut mounts which are weak design with Meyle HD's. Replacing the struts (fronts) will effect alignment of the car....

Bilstein's it seems like Shoex.com has really good prices or there is a reputable ebay seller with them also. I would except something else as being equivlent... especially with the dollar amount of replacement.