Thanks for the responses, I have spent a good chunk of time this week trying lots of different combinations.
One thing I do like about using Sims is the ability to try so many different models on the same DI track with very little work.
 
My amp of choice is usually Vox followed by either Orange or Marshall. I don't tend to go for the High Gain sound very often of which there seems to be a lot of models for.
 
I have struggled to get a good Vox tone before with emulations but finally after mixing versions and for the first time digging into impulse responses I have finaly got a tone I am pleased with. It ended up being a blend of Amplitube copper top and Guitar Rig AC box into a AC30 Cab Impulse Response using Le Cab 2 (also a great new free discovery) Amplitube gave me some nice crunch and bite and Guitar Rig filled the sound ESP the Bass that seemed lacking in Amplitube alone and then the cab, well that really glued and formed the tone well. I must admit I was somewhat skeptical about the impulse route but having tried several over the last week I must same I am very impressed by what they offer.
If anyone has any links to recommend or share I would be interested!!
I have also managed to get round to trying Scuffham which I have heard good things about was great and is definitely on the to buy list.
Also I picked up the Peavey HP $12 deal and was pleased with that for the price it was a bargain and gave me more blending options. The Classic 30 Amp in that package was also very "VOX" like in tone and will be worth some more experimentation.