Before you get too excited, this spreadsheet was quickly made to compare class 4+ armor/rigs only, and only armor that covers the thorax and stomach. It's made for my use but I'm sharing it in case anyone else finds it helpful.
If you want a budget armor/vest comparison, just buy the
If you're doing well on cash mid/late wipe and want to know what the trade offs are between cost, protection, speed, and ergo, I present to you
In my non-professional opinion, Killa's armor is the best overall armor if you can afford it. Armored rigs have better stats than level 4 armors. If the Gzhel was added to traders as a non-barter armor around 70-80k roubles, I think it would be a popular choice but inferior to the ANA M1 and M2 overall (but wearing the Gzhel would let you pick any non-armored rig you want).
If you have any corrections/comments/suggestions, please let me know so I can make this spreadsheet the best it can be.
Source: https://www.reddit.com/r/EscapefromTarkov/comments/ehtres/tarkov_armorrig_comparison_guide/