I've considered getting a wide band for years.
Seems like tho, every time I see someone playing with one, they seem like they are chasing their tail. Or more specifically chasing a proper number. Seems like any cam with a good bit of overlap would rule out low rpm tuning and all you'd be able to change is jets. I dunno if it'd be worth it. Either way, it'd be fun to play with, but I dunno if I'm savy enough to get much good out of one.
Seems like, sure it takes me a few months of driving, making a small change, driving making a small change, etc, but I always seem to get it tuned perfectly. I think I'll just stick to doing it that way.
Either way, good luck.