Looking for good rhythm gutiar ("chunk") sounds

Hi all,
 
Any suggestions for rhythm guitar (I think the term is "Chunk") sounds. Something like a ZZ Top rhythm is what I have in mind.
I'm currently using Rapture "Acid Guitar Pwr Chord" and messing with the parameters to arrive at a semblance of what I need. I also do some further EQ tweaking in the PRO Channel. I'm wondering if there is something else I might use.
(I hope I'm expressing myself correctly here.)
 
Any ideas?
 
Thanks in advance,
Ray

The difficulty is "good".
I have never heard a vst-guitar that sounds like a real guitar. The note that it has to be "good" is the problem.
I searched a long time as well for a good plugin without success. Now I have bought a Les Paul.
If it is your requirement that the guitar has to sound "like a real guitar", then - in my opinion - there is no plugin in the world. Everything sounds like plastic.
 

I've been using "Ministry of Rock 2" from EastWest Sounds. You can run it through some of the effects chains Craig Anderton has created for CW SPLAT and get a pretty convincing result. I did their Composer Cloud subscription just for this set. All the sounds on this piece are EW.
https://soundcloud.com/user-660553900/independence-day

All of the above are good suggestions. I will also throw in Virtual Guitarist 
 
Iron and Sparkle are pretty good. I have Silk and Amber but I've yet to give them a real go.

Thank you all for your input.
I will check them out, although I think Strum isn't suitable since I only see Ac Guitar emulations (which are astounding in many ways).
Thank you for taking your time.
Ray

suggest you check out Orange Tree's group buy ongoing... I have all the guitars and you can get all the crunch you've ever dreamed about at 60% off... these are REAL guitars, deaply sampled, with a VERY powerful strum/riffing system, and a consistant "evolution" engine across the line.  OTS is the shizz... got most of the others but Greg rocks the best... 
 
Then again, the latest entry is Three Body Tech and they have chunk up the wazzo.... with their first forey into guitar vst...."heavier 7strings" This thing kicks butt.  Lots of interaction with this new company and they are evoling this darling quickly based on our user feedback.
 
The advantage with these instruments is you get endless creative guitarings, awesome riffs, strums and sounds, while stirile libraries like ew's Ministry of Rock 1&2 are loopy crap in comparison... I've got um and other 8dio/ew/other such libraries and tired of them almost immediately.  Then again, different strokes for different folks!  But for the money, given this huge sale, it's a no brainer which way to go and YOU create... easily and endlessly
 
Disagree with others that guitar vst's can't do a bang up job... my Novax upgraded ancient Tele & Strat sit in a corner most of the time, as do my two Ibanez basses...Whilr I'm primarily a vocalist/songwriter, I've wanked on guitars for nearly 6 decades and what you can do with some of the more eligant offerings, like OTS's acoustics/electrics, is just mindboggling these days!
 
It's the perennial argument between a violinist and Bohemian violin... or guitarist vs   xyz.... and while nothing will replicate the totally intuitive free flowing stuff of a real SOLID player, I can play things on a VST I could NEVER get right on my actual instruments... and for RHYTHMS, CHUNKS, etc... you will be well served in the virtual universe... 

Oh and a bit OT (as it is not windows) but GeoShred will blow your mind!!
 
http://www.wizdommusic.com/products/geoshred.html

Wow, Orange tree is great. I wonder if I can get product and a library together at a cost effective price, with this sale. Am looking into it.

+1 for Orange Tree, particularly with the current group buy. The guitars work with Kontakt player so you don't need to buy Kontakt. (some of their other products need the full version)

The strum engines are intuitive and versatile. Dracus has the best heavy palm mute sounds and can go far beyond its metal roots. Strawberry is the all round most versatile.

TheMaartian
On any of them, are you using a palm mute articulation to get the 'clunk'? Or?

That's a great point.  Palm muting will get you really close to where you want to go.
 
Good luck on your search.