RAM Upgrade time!

[Monster P]

Right now I'm running a 2800mhz GSkill 16gb kit in my Asus X99 Deluxe board with an i7 5820K.  On the 100mhz strap its running at 2400mhz with a CPU overclock of 4.4.  On the 125 strap I can get the ram to run at 2800mhz but the CPU only clocks to 4.0 and the system renders slower.  I want to step up to 32gb of ram but my question is should I also move to a 3200mhz kit. I hear that on the 100mhz strap it is more stable than 2800? Is it worth twice the money to go 3200 or spend $80 and just up the 2800 kit to 32gb? 

[Electronics Wizardy]

Ram speed isn't worth it. Just get the slower kit.