Mainly, I am looking for a set of mortising chisels that I can do "Arts and Crafts" style projects with. I also should have prefaced it by saying, I'd like good intro chisels to see if I actually want to do it this way or if I should invest in a "mortising machine".
There's so much personal preference involved here; both tool brands and work
methods. You need to nail down your work methods first. How much will you
build? Does speed matter? How much learning time can you afford? How
patient are you?
Even if you are a Norm-Abram-100%-machine-tool person, there are some
hand tools which are necessary for good work. Paring chisels and a block
plane fall into this category, while mortise chisels do not. I can't think of
anything you'd do with mortise chisels except chop mortises.
I loathe router noise and hate tuning and messing with mortise machine bits. I
make maybe two pieces a year: it's a hobby for when I get the itch. So I much
prefer a quite afternoon chopping and shaving at a bench, even if my results
are nowhere near fast and accurate as a machine made joint. I've used both
machine and hand tools, and I have much more fun with a marking gauge, a
solid bench, and my fake Japanese water stones.
I suspect the vast majority of hobbyists prefer machines: fast, easy, and
accurate. Their hobby is not about mastering skills beyond measuring and
setting a fence or depth-stop. They want a perfect piece of furniture exactly
how they imagined and they want it yesterday. Whatever floats your boat.
It's all good.
Back to the original question. Besides the slightly less expensive Lie-Nelson
mortise chisels, my personal favorite is the Ray Iles English mortise chisels...
http://www.toolsforworkingwood.com/store/item/MS-MORT.**
As an aside, for larger joints I usually remove most of the waste with a brace
and bit. I pare away and precisely fit the final joint using sharp paring chisels.
It's probably slower than using a mortise chisel, but they are not a
requirement to make larger mortise and tenon joints by hand.