Frequent CV joint replacement

I was wondering if anyone has an idea of why my WJ keeps going through CV joints like there's no tomorrow. The current set of joints in the front end have no more than 5,000 miles on them. When I replace them, this will be my third time. They are so bad now, if I am driving greater than 55 mph, my front end shakes something fierce.



Also, does anyone recommend a certain brand or store to buy them from. I have bought my joints from RAXLES in florida the last two times. I am wondering if these joints are junk from the get-go.



Thanks for your feedback.