Moor Street is better.
- Moor St is closer
- The walk is well signposted from new street to Moor Street and the new path installed will take you directly there
- It's largely on level terrain - going to Snow Hill is uphill
- Snow Hill is nowhere near as attractive as Moor St
Only real advantage I can see with going to Snow Hill is that you stand a better chance of getting a seat. I suppose there are better opportunities to get some food en route too
Depending on where you're coming from is it practical to change at Smethwick Galton Bridge?