Different fit of 2-Piece Uppers

[BureKovy 20]

I've looked through all the old threads, but there isn't a lot addressing the upper section of these brands.

I have never worn a 2 piece pant, currently in Tackla 9000z and I have worn 9k girdle before.  I love the 9000z lowers but the upper section I always have to re-tighten and there is alot of rib protection.  I was thinking of putting in a lacing system or the other option would be to go with a 2 piece.  Obviously some uppers and lowers you can't mismatch but tighter in the hips.

Comparing:

Eagle Aero/PPF, Tackla 5000x, Reebok/CCM 7000 or any other brand mismatched.

I've even thought about doing a 9k girdle on the uppers and attaching lowers of the eurofit.

[yrhmblnr8r 69]

These were in stock at my local Michael's so added them to a 9k upper. https://www.amazon.com/No-Sew-Jean-Buttons-Pkg-Antique-Brass/dp/B00A2GR71C 

Completely customizable to fit whichever lowers you prefer.