Glass shelves to front edge of unit, or set back?

[theflyingpig]

I've made some shelving units to house, apparently, "the ornaments".... Nope not a clue either.... But, just about to order the glass...

Would you set the glass shelf to the front edge of unit, or set it back 10mm or so?

Thanks for any input!

 

[freddiemercurystwin]

I'd probably go with set back, personal preference really, also that will ensure any very slight discrepancies with the unit are not highlighted if the shelves were flush with the front edge.