Difference between BT(Upgraded to ADD-ASMAWF ) vs BTA device

Hi All 

I have a running BT i15800 upgraded to ADD-ASMAWF device on site, i want to add add another device, now i have a F5-BIG-BTA-i15800 option to add, i want to know is there any technichal difference between these two device ?

should i consider anything for this matter or not ?

Thanks