I tend to hear extremes from great to run, don't walk, away about StreetLib. For me, the extremes raise more concerns than any critical review of the service. Also, the US CEO who had been active in communities is no longer with the company (and it wasn't one of those, "moving on to new opportunities" exits either).
I wanted a distributor to get on google play and iBooks. At the time only StreetLib and PublishDrive had access to Google Play. When I started the signup process it was confusing and a pain unless you set it up as a publisher account. Around that time, Pronoun dropped their "have to publisher to Amazon through them" restriction. So I ended up going with them instead (and I seriously miss Pronoun, they had some great juju on iBooks and GooglePlay). By the tie Pronoun closed its doors, Google was doing what it could to help authors make the transition and opening accounts.
If I didn't have a Google Play account, I would either sign up for their waiting list and wait until I got one or go through PublishDrive. With my luck, I would be one of those people who had a craptacular experience with StreetLib.