Westcott vs Peak suspension collar lift kits

The westcott preload collar lift kit (2.5" in front 0.75" in rear) is one piece for the front and a rear spacer. The peak suspension 2-pc trail lift kit (2.25" in front and 1" in rear) is 2 pieces for the front shock and a rear spacer. Question: is there a difference between the two other than peak suspension having an extra piece for the front shock? Obviously one is preload and the other splits up the load. But any noticeable performance difference. Just curious as to why they decided to do it differently.

 

I bought the peak, it looks like a solid kit, someone mentioned the threads on the top hat are a bit sketch or short for engagement, but most seem happy with it and I know Peak chimed in and said it was fine / normal. Would have kept it but gonna do King setup instead.

 

Yeah I saw that thread about the concern with not enough thread on the top with the top spacer. Good to know Peak chimed in and said it was fine. The shop I went with didn't carry the Peak lift, they had the Ready lift if I wanted a 2-pc kit

 

Think the ready lift is just a straight spacer, seen that be the dealer norm.