Zone Adventure Series 3.5 level V.S. Readylift 4/2 SST

I have a stock 2012 4x4 DC Tundra, and I’m looking to put one of these kits on it. Does anyone have any opinion/recommendation between the two? I know there’s a forum for each, but I’ve never seen the two directly compared. The Zone kit has gotten more praise, but they both include the same parts.

 

So they are a spacer lift with UCA and no shocks?

Personally I would skip the spacer lift and for the cost of those, around $900-1000, you can get replacement adjustable coilovers such as eibach Pro truck 2.0. Others to look at would be Bilstein 6112, OME suspension, Dobinsons, and Toytec has several good options.