I've used Grados a lot, and the more expensive ones, particularly, sound
very nice. They have a slightly warm coloration which tends to offset the
too-bright coloration of far too many records, especially from the later LP
eras.

Down sides: There can be a tendency to wobble on warped records,
particularly "dish" warps, which have a higher frequency. This gets worse as
the cartridge gets older, and can be alleviated by replacing the stylus. The
ideal arm for a Grado is a medium mass one which isn't super-low-friction; a
tiny bit of frictional damping isn't a bad thing in a Grado's case.

Also, as mentioned, they do pick up hum from synchronous motors, such as
those found in the AR turntables and some Linns. They have no problems with
direct-drive tables, in my experience.

Up sides: They are quite uncritical about capacitative loading.

And they can be *very* nice for playing 78s, again as long as the 78 isn't
warped. Keep a Stanton 500 around for those discs.

The "DJ" Grado is, I think, a version of the least expensive one. You'd
probably get better results from one of the more expensive units; they're
still pretty reasonable for the first few steps. And the "selection of 5
styli" -- are you sure that's not just a 5-pack of the same stylus? That
would seem like a reasonable package for DJing.

Peace,
Paul