If it was me and money was not an issue I'd buy a 19" rack mount PC case and build my own. Put it in a nice shock mounted rack with plenty of cooling.
If you go the Laptop route buy 2 exactly alike.


John
ESI Gigaport HD+
Lenovo Turion II /4 Gig Ram/ Win7x64 be
15.6" Monitor
"The only Band is a Real Band"
www.wintertexaninfo.com/BANDS/JohnnyD.php