Feeling pretty happy with this whole thing.
As per Joed's excellent advice I sent off some razors to Lynn for pro-honing.
I am very, very glad to have something to compare to!
I've been swapping out the 4 shave-worthy razors I've got over the last week now. I was afraid that the one I'd honed was going to feel so inferior that I wouldn't want to use it. That fear proved unfounded.
At first I was actually getting a better shave off the blade I'd done myself, but that was just because I was still afraid of the edges Lynn had put on. :D Now that I'm more familiar with them (and know that my breath reflected off the edge isn't going to cut me), I'm doing a bit better with the pro-honed blades than the one I did.
Having a bizarro-swirl of beard hair on my neck (yes, the grain has a spiral) means that any kind of shaving requires some effort, but I'm definitely getting the knack, and these blades make it a pleasure to do.
Now to get some more of these razors honed up! Unfortunately, I went after the low-hanging fruit first and all I have left are interesting in one way or another.
So thanks again Joed for suggesting I send not one but two razors for the professional treatment (it's a long story on how it ended up being three). It's a glorious confidence builder and a target to aim for!