Anyone ever try them? Getting ready to replace the shocks on my 98 Blazer and wondering which would be better.

Edelbrock IAS
Rancho
Original equipment

If you have a "Z" badged truck, or suspension package - half of the price of that option package will be tossed away when you replace your shocks. OEM all the way when it comes to replacing parts on a Z equipped vehicle for me.

Aftermarket: For me, a good aftermarket package has always been Blisteins. Where you find a single seal and vent in a standard shock, they usually have at least 2 to three. Damn near bulletproof and very long lasting. Worth the bucks to get a matching spring kit to go with them.

If off-roading and rock-crawling all of the time - Rancho. Used nothing but on my Jeeps with no complaints. A bit harsher in the ride when bouncing down the highway - but they will not blow up when they invariably "bottom out" at your suspension's full travel. (Like when you have one wheel completely out of contact with the ground) Adding an adjustable nylon strap kit will soften the blow when you experience harsh off-road full extension, keeping your brake lines and shocks in one piece if you do alot of Baja style off-roading.