No idea on the quality, I just learned about them today. Their website is refreshingly honest though:
Q1. Will I be able to sustain 100Mbps downloads?
A1. NO! (Would you believe us if we said otherwise?)
Q2. What is the upload speed?
A2. It will peak at 50Mbps.
Q3. Do you block any ports?
A3. We do not block ports except for outbound SMTP. Outbound SMTP must flow through our SMTP servers in order for us to avoid facilitating both intentional and unintentional SPAM.
Q4. Do you shape/rate-limit any specific traffic?
A4. We do not shape or police specific traffic but do limit total traffic in the aggregate coming from the port. There is no rate-limit on P2P protocols other than the top level cap.
Q5. So what is the average speed that I can expect to see on this 100Mbps link?
A5. You will be able to burst to 100Mbps download and 50Mbps uploads. Large emails with attachments of 20MB will mostly see 50Mbps upload speeds. Facebook picture uploads will be in excess of 10Mbps most of the time. General surfing will see pages transferred to you in excess of 25Mbps and will hit 100Mbps. 500MB+ File Transfers will likely plateau at 10 – 25 Mbps depending on the sites.