We switched to a fibre line about 2 years ago, and it was originally a 10mb line, with a 5mbit cap to the internet (MPLS VPN setup between offices). We just upgraded the line though. Not sure if it's in place yet, but when finished, it'll be 20mb/20mb each dedicated to internet and inter-office vpn.
Intel i7 4790k @ stock, Asus Z97-PRO(Wi-Fi ac), 2x8GB Crucial DDR3 1600MHz, EVGA GTX 760
Samsung 950 Pro 512GB + 2TB Western Digital Black
Dell 2408WFP and Dell 2407WFP-HC for dual-24" goodness
Windows 10 64-bit