Good quality tools should last a life time and will work so much more effectively when they are kept in good condition - just ask any professional.

This handy sharpening whetstone block will keep your tools nice and pristine.

Something about a good workman never blames his tools and all that....

For some of the best secateurs see here:

Felco Model 2 Original Secateurs

or for smaller hands try Sophie Conran Secateurs

And not forgetting the absolutely sumptuous Okatsune Japanese Pruning Shears