[SPB147/SPB143] Which one do I choose?

I can get them for £500 and £550 respectively.

Already have a brown Baby Alpinist but do love the SPB147 - just wondering if I need to mix it up a bit to keep things versatile.

I can get them for £500 and £550 respectively.

Already have a brown Baby Alpinist but do love the SPB147 - just wondering if I need to mix it up a bit to keep things versatile.