From what I have heard Deaver, Alcan, Atlas and National are all reputable spring makers but they are pricey. From what I know by personal experience, BDS and Tuff Country springs are excellent, affordable choices. They flex like mad, ride great, are durable and have great warranty. If you have a BDS dealer near you, I would just get my springs from them. They have the best warranty in the business. You break it, they replace it. I can't remember the last time I lifted a front tire with my 6" front springs.