You don't need 3/4" drive for the vast majority of Land Rover work. 1/2"
is quite big enough. 3/4" is overkill and you'll end up regretting your
purchase.

If you have an existing 1/2" set just add extra bits as you need them.
If what you have is smaller than 1/2", I'd go for a metric 1/2" set for
1996 vintage and younger.

Whatever you do, go for quality rather than quantity. It'll pay in the
long run.

It's often better to pick and choose individual items more suited to
yout actual needs rather than go for a set that has lots of wierd bits
that'll never get used. As an example, you may wish to get some specific
single hex. sockets instead of bi-hex. ones for those horrible little
10mm A/F nuts that round themselves off even before you touch them with
a spanner.

If you do really need some 3/4" bits you'll probably get away with a
knuckle bar, a few very specific sockets and possibly a short extension.

Sucking his keyboard for inspiration, Martyn Dean typed:

I have done everything on my Landies with a 1/2" drive set (both metric and
imperial), supplemented with big FO sockets as needed.

A good selection of metric and imperial sockets will almost [1] guarantee
you will have a socket to fit any nut or bolt you come across.  Halfords do
reasonably priced single sockets, and I've never had a problem with them.

[1] *Almost*.

Just started the rebuild on my 2a 1966 down to a new galv chassis (the holy
grail). Using my 3/8" or 1/2" sq dve ( of 30 year pedigree) they've been
perfectly adequate with copious quantities of release oil so far. However
the exception was the steering box support bracket bolts and the rear tub to
chassis bolts at the back, both of  which required 4 1/4" circular hi speed
abrasive sockets to remove :-)   .

Now I need some advice on buying bits. Springs, bushes, Marsland .v.
Richards etc.

Any comments here?

Eddy