I'm going to throw a question into this, mostly aimed at Jimmy because he has experience with the PR40, but also for all of you guys with FOH experience. I use a lot of effects in my signal chain, and typically use a countryman type85 off of my V4 to give the house. The issue I've been encountering, is that the combination of my overdrive/distortion effects with tweeter-less cab tames them, but taking the pre-cab signal from the head results in a ton feed back if I get too close to the monitors.
I've been doing what I can to counter-act the problem, turning down the OD, adjusting my overall EQ, etc, but I've been considering getting a Heil PR40 to mic my cab.
Pretty much it's come down to:
It is going to be worth it?
Will most soundguys be put off by the mic and just say go DI
(especially considering I play in an original rock band so our sets only range from 30-60 minutes depending on the gig)?
Would something like the Heil (or an RE20 which was also on my mind) just cause more noise by picking up everything else?
Only you can decide if it's worth it, Corey. About 90% of soundmen I work with love it that I show up with a mic that's not a 58, the other 10% get all antsy about it. I don't care...I use it anyway, though I'm doing gigs where I'm usually the headliner or the headliner's bass player and it's real easy for me not to care. I think if you inform the soundman in advance that you use a mic and let him know that you're not some FOS yutz who just got a bass yesterday, you shouldn't have a problem in most venues. Funny thing is...I'm getting a Type 85 because I'm getting more and more drawn to that speaker DI sound
As for noise rejection, I've yet to have a problem with it. The Heil mics are VERY directional and are end firing, so I'm sure it picks up a little, but nobody ever complains about it.
BTW, I don't think it's the soundman's call under any circumstances to try and second guess the band. I often show up with an SVT that looks like it was dragged behind a truck, but it was just fully serviced and works like a dream. And if you even so much as insinuate that you don't think it's reliable enough for you, then you better be prepared never to work with me again

Yeah, I'm a jerk, but it's my gig, not yours, and it's my call. And if it does go down, you can laugh at me after the set. But it's my set, not yours, and it's fully on me if it craps out, not you.
Also, the level of professionalism or experience shouldn't enter into it. Yeah, if you're a newbie, you shouldn't do stupid things like ignore the soundman's good advice when you turn up way too loud or have a crappy tone that's not working. But if a bassist is putting out a signal you don't like and insists on ignoring your advice, let him hang. Sometimes they hang. And sometimes you might be surprised how well it works, and you may even learn something. The advice thing goes both ways. You think you're too good to learn from a band? I don't think so.
To be honest, I'm very disappointed in the attitudes of soundmen in this and other like threads. It's almost as if you tell bands that your word is law and you dare not question it. As much as I respect soundmen, their job is to SUPPORT the act onstage, not tell them how they're supposed to sound. If you see someone screwing up, especially a newbie, it's fine to suggest a better way of doing things. But if they reject it, hey, they're the one who takes the heat for it, not you. You just move onto the next band in line, and they never get invited back again. If they bring an amp that you don't like and they want a mic on it, who cares? Throw a damn mic on it. If they bring their own DI or they want to use the DI in their head and you don't like it, so what? You can't work with another DI or a mic? Way too many times, soundmen act like the only reason the band is there is so the soundman can show off his nifty PA. Wrong. The band is the reason you have a job, unless of course all you do is play CD's. How about a little less dictatorship and a little more respect?