Had a look at both versions and in gereral it the same.
Shooting ranges for long range is the only changed on the fast play sheet.
There is probley more minor changes but It will take longer to find them.
so you are spending a tener(old 14.99p and new 25.00p) extra for the hard back copy with coloured pictures an coloured counters, but it is nice.
Looking for it on offer I think is the best way,
Caliver books 24.50p + P&P, Amazon is 16.98p + 2.75p P&P
And you still have to buy the two lists 18.99p each
but I still have the old lists on Disk.