Which is better 3 Layer Mattress Construction among the following? Advise needed

Dear TMU
I have narrowed down my preference to 2 suppliers . Both are priced almost similar.
The mattress construction is as under

Mattress One :
Layer 1 – 2" of 4 lb luxury cooling gel memory foam

Layer 2 - 2" of 1.8 lb transitional performance foam

Layer 3 - 6" of 1.8 lb premium base layer foam provides a durable foundation and support

Mattress Two:
Layer 1 – 2" of 4 lb luxury cooling gel memory foam

Layer 2 - 2" of 2.0 lb transitional performance foam

Layer 3 - 6" of 2.5 lb premium base layer foam provides a durable foundation and support

If price is same which is better construction. I am mostly side sleeper and prefer a medium firm feel.
Thanks for your input.

I responded to the wrong thread by accident but to answer your question definitely the second one is better quality.