Switchy is an AMAZING product and probably one of my best AppSumo buys. I have bought a total of 10 codes (maxed out two accounts), and I might still want more codes in the future, because it's just so good!

The re-directs could be just a tiny bit faster and it would be even more amazing, but the slow down is hardly noticeable most of the time, and it really does EXACTLTY what you need it to do. It also offers so much flexibility in how you set up your links on your domains. You can for example set go.domain.com and then create endless links on that subdomain, or anything else you want to do.

I couldn't give a stronger recommendation, and if I built it myself (I have built my own link trackers in the past) I wouldn't change a single thing (other than perhaps upgrade the servers to be even faster)! If you have more than one website, just buy it and stop worrying about how you are going to deal with links and enjoy awesome tracking on everything.