To expound upon my response.
The Leigh jig is NOT difficult to use. The manual is extremely detailed,
which some people interpret to mean complicated. It is not. The Leigh
people just provided illustrated step-by-step instructions.
The Leigh does take a small bit of time to set up and mount properly, but
considering the much expanded capabilities of the jig, this small investment
in time and effort up front is well worth it.
Finally, not only can you do half-blind and through dovetails, with infinate
combinations of variable spacing (up to 24" wide, by the way), the jig
allows you to do many other variations (double dovetails, angled dovetails,
etc.). You can also do 1/4" finger joints using the jig as delivered.
Due to the large capacity, you'll realize you can easily use this jig to
dovetail carcases for cabinetry, make large chests, etc. I looked at all
the options, including the Akeda, when I bought mine and I realized the
versatility of the Leigh just outpaced the others by heads and shoulders. I
suggest you check out the Leigh website (www.leighjigs.com) and go look at
the online manual for the Leigh. I think if you take a look you'll see it
isn't that complicated or difficult and that the options you'll have will be
welcome, not loathed.