Future availability of M.2 slots

[Doomy]

I'm looking to do a rebuild of a Home Theatre PC system I have that's been playing up, replacing the motherboard and CPU. I'm also thinking of adding an 120GB SSD as a boot drive.

The motherboard I've chosen has an M.2 slot so I have choice of going for a 2.5" SATA SSD or for an extra £10 I could get a M.2 SSD. The M.2 slot has more bandwidth so should be faster but if I do buy one, how likely is the M.2 slot to be still in use should I wish to reuse it in a future upgrade? I'm pretty confident SATA is going to be around for quite some time, but the M.2 slot has already superceded the mSATA slot. Do you think this is a valid concern? Which drive would you go for?

 

[Nine Layer Nige]

Future-proofing a pc is a bit of an oxymoron. The M.2 slot seems really fast and i will likely get an m.2 mobo and ssd in the next year. Sure as apples is apples, the m.2 will be superseeded by the m.3 (i made that bit up).

 

[mad-max79]

I would go with 2.5", it is usable nearly everywhere. Small SSDs usually don't use all the SATA performance.