I've got Invisiglass games and regular glass games, and I have both with stadium lighting.

The games with regular glass and stadium lighting feel like they have invisiglass. It truly works almost as well as the glass.
The games with Invis + Stadium have zero glare and a brighter playfield.

If you're only concerned with glare and don't desire a brighter pf, go with the glass.
If you're only concerned with glare but wouldn't mind a brighter pf, go with stadium lighting.
If you want both but are on a budget, also go with stadium lighting.