Recently, on another thread, Nitro indicated he's using a server-type machine(s). Can someone point out some potential pro's and con's in using servers versus say, a higher-end PC for trading? More stability against crashes and other such things? Is it a lot more expensive to purchase/upgrade the hardware/software? Do "regular" trading programs like tradestation, esignal and metastock run on servers the same as on a pc? Thanks!