My tone is muddy

I'm on the lifelong trip of finding my magical tone. To me, my current setup sounds too mid-rangy and muddy. I play hard rock/metal. Here is a list of my current equipment.

Music Man EVH (Main axe)
Marshall JCM 900 Dual Reverb 50 watt head
Marshall 1960A cabinet
Line6 Pod Pro (To me, only good for recording)
various little stomp boxes

I'm thinking about replacing the pup's in my EVH with Dimarzio's Steves specials since they scoop out some of the midrange. I'm also considering changing out the speakers in my Cab. It's loaded with 25 watt greenbacks right now. Looking at Vintage 30's.

Any comments and/or recommendations would be greatly appreciated. Looking for a tone that's full and tight.

I just wanted to thank everyone for all the help and suggestions here................................................................................... :rolleyes:

Hey, i believe equipment makes all the difference in the world but you also gotta look at the settings on your pedals and amp. I think changing the speakers are gonna help you quite about, as for finishing touches, what actual sound are you trying to achieve? Nasty meshuggah type of crunch or that nice zakk wylde bite.

More like the Zakk Wylde Bite (One of my favorite tones) or Pepper Keenan's tone from Corrosion of Conformity. I've been playing around with the settings on my amp and pedals for years.....So far, the best thing that has helped me is my EQ pedal. I believe the speakers in my cab is my worst enemy here. I've heard that Greenbacks don't handle the lows very well. I get the same "muddyness" from all of my guitars that have humbuckers, especially my Ibanez 7 string, which to me points to the greenbacks being the culprit. I should probably just sell the JCM 900 and get a JCM 800, then load my cab with vintage 30's.

Yea JCM 800 is a badass amp, vintage 30's are real good speakers. If anything, i wouldnt suggest having the same ones but fiddle around these, zakk wyldes settings are Zakk Wylde Settings
Bass - 10
Mid - 4-6
Treble - 4-6
Presence - 2
Master - 4-6
I always believe in your own sound but this is a base. I have my treble at 6 and bass at 6 and have mids like at 4 and its not a bad combination i get that nice bite.