I worked with those super slim AcuPro ballasts at school. I opened one of them (they're just clipped, no tar!), and the circuit inside was basically the same as those found in CFLs!
Somehow I'm not surprised by that, I'm not going to take this one apart but I guess it makes sense the circuitry would be about the same as a CFL since this is only 14 watts.
My Lithonia HO fixture had an Accupro ballast too, good thing it still had a deep channel so I could pop a magnetic one when it blows. The newer Lithonia HO strips have a shallow housing so most magnetic ballast can't fit.
Yeah I'm not convinced of the quality of these electronic ballasts, I have seen many fail at my school. I'm hoping the smaller ones like this that won't be used often should last fairly long. I also just installed this, pictures to come!