I'm interested in the opinion of people who have experience with these 2 companies products. I'm putting an 8 3/4 rear in my 73 Roadrunner and want to replace springs at the same time. I'm really interested in Espo's because I've read a lot of good things about them. MY problem is I contacted them and it's 5- 6 weeks to ship springs. The pricing is basically the same at both places so cost isn't really a factor. Honestly if the Espo's are that much better I'll wait the 6 weeks with shipping to get them even though my car will be sitting until then. If they are basically the same I'll buy whatever is at my door faster.