Retaining wall options - gabion vs blocks

[andrew29]

To get rid of the old solid concrete wall…. Am I best off renting a jackhammer?

[ForeverYoung]

fwiw when I did gabions I recycled free bricks/pavers where they weren't on show - the regular shapes made packing them in easy.
also I used ties to link the vertical gabion walls together as I went to stop them distorting.