ASUS MAXIMUS VII HERO - want 32Gb RAM

[Psion444]

My PC has 16Gb RAM and I would like to upgrade to 32Gb.
The existing Corsair 16GB (2 x 8GB) Vengeance 1866MHz DDR3 240-pin DIMM CL9 is no longer available.
I would like 32Gb compatible RAM however it seems that most recommendations are no longer stocked. I have been looking to see whats available and found these and am not sure which may be best:
Kingston KHX24C11T3K4/32X
G.Skill F3-2133C11Q-32GZL
Or something else??? I would welcome any suggestion.
P.S. I saw a previous question recommended
G.SKILL Trident X Series 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 2400 (PC3 19200) Desktop Memory Model F3-2400C10D-16GTX
but can not find this in the UK.

 

[Dark Lord of Tech]

Mixing modules is hit and miss , even if identical could be incompatible ,you won't know till you try them.

 

[Psion444]

Thanks. I realised that it is not a good idea to mix modules and so decided to buy 32Gb new RAM. I'm sorry I didn't make this clear in my question.

 

[Dark Lord of Tech]

Understood. NEW 32GB is the right move.

 

[Psion444]

The question now is which ones...

 

[Dark Lord of Tech]

I like Tridents.