I honestly Disagree with overselling, I've been screwed with one, and tried another, and loved it. (Still do)

Siteground is a huge overseller, I had an image hosting site hosted on it, and after about three months, and only like 1/10th of what they offered, they shut me down.

I switched to Servage.net (They trasnfered my site and everything)

And I was with servage for about two years (I actually just stopped hosting with servage last month)

I didnt have an image hosting hosted with servage all two years, I sold it about three months in, but I still kept the servage account, because it was damn good hosting, affordable, and damn good support.

Now I host with a small company ran by a TFL user, and Have yet to find a problem in it...