I dunno... PDI glass is pretty amazing IMHO... its definitely a luxury mod... but on a nice clean machine... it makes a huge difference. Newer games have very intense LED illumination, reduction in reflection really makes a difference. ColorDMD is awesome... but more time is spent looking at the playfield. It is a tough choice but between them, but I lean towards PDI. Pinstadium doesn't register for me as something to consider.