Aerbabe, Mesh were part of Evesham Computers I think and as such will be well aquainted with customising your PC. Tell them what you want and they shall upgrade accordingly.
A few people have allegedly, had a less than orgasmic time with Mesh, but the ones that I have used in the past have been solid, well constructed and bomb proof. (But I aso remember this with Dell) My own experience of Mesh has been a good one.
If you want us to look over any upgrades here, I am sure that the inmates will only be too happy to help spend your money.
Conan