Recommendations/ Comments on Battery Upgrade

midijeep

I have a SMA SunnyBoy 3800-US inverter, Sunny Island 6048 with a 48v-200Ah Nickle Iron composition battery backup. 

I would like to upgrade the battery side of my hybrid PV system.  I have been looking at the following batteries.  Does any one have any experience with them or comments on what you think would work best.  TIA

BluePlanet (Namaka BMS)

Simpliphi

Discover(AES Linx)

Fortress Power

Iron Edison (Re-Volt)