Will a Crucial M500/M550/MX100 be bottlenecked by Sata 3Gb/s?

[consolegamer]

I'm planning on building a PC with whichever of these is cheapest at the time (early to mid 2015).
My question is, will SATA 6Gb/s have any benefit over SATA 3Gb/s for a budget SSD?

*Edit: This is a budget build (about $300) and the mobo with SATA 6Gb/s is almost $20 more than the one with SATA 3Gb/s.

 

[Hayden Hutsell]

Interface SATA 6Gb/s (SATA 3GB/s compatible) SATA 6Gb/s (SATA 3GB/s compatible) SATA 6Gb/s (SATA 3GB/s compatible) SATA 6Gb/s (SATA 3GB/s compatible)
Sustained Sequential Read up to (128k transfer) 500MB/s 500MB/s 500MB/s 500MB/s
Sustained Sequential Write up to (128k transfer) 130MB/s 250MB/s 400MB/s 400MB/s

Judging by that, maybe not too much performance decrease, but why not just go wit sata 6gbs?