Radio wiring #$%#@%
And you're probably right, having first hand experience. But you're comparing apples to oranges because a company that has a good TJ kit may not necessarily make a decent YJ kit. But you can compare customer service across the entire product line.
If you want a good 4" kit, check out the Rubicon Express Extreme Duty 4.5" or the Rusty's Offroad 3.5" kit. The Rusty's kit is about half the price, got mine for $385. Both have a beefy second leaf that's a full military wrap on one end and 1/2 military wrap on the shackle end. Gives a lot of support under the ends of the main spring where it's prone to bending, and aids in preventing axlewrap.