both companies have their pros and cons. The final decision really depends on your needs

EV1 - pros
#1 much bigger network than FDC, using multiple different carriers
#2 larger selection of control panels and add on software

EV - cons
#1 lack of IPs
#2 charges sales tax
#3 limited amount bandwidth - if you go over your monthly allotment you`ll pay through the nose
#4 extra charges when it comes to IPs, OS reinstalls ect


FDC - pros
#1 unemtered bandwidth - we never got charged a penny extra no matter how much bandwidth we used
#2 free support - OS reinstalls, free remote hands etc
#3 free IP address

FDC - cons
#1 only 3 transit providers
#2 offers only 2 control panels