good choice ! as its your theme, enjoy the pin 
here's mine TRON LE story
same as few others & read above, i directly ordered 1 when STERN annouced it (was gambling again, will not more do that nowadays)...
in 3 years home, we (mostly my son & i) putted +/- 10.000 games on it
than was time (well it took me few monthes to decide myself) to sell it & play something else
pin was sold with a positive margin (nothing to hide : bought 5800€, sold 7400€ with mods), and really it was in perfect state, only very light wears/uses at the scoop (protected by a MANTIS not a CLIFFY)
and now, i'm still thinking i've made a big mistake, as i'm still missing my TRON LE !
last point (sorry for pro owners - lol inside) : as few others, got this feeling that a pro, even fully modded, will never be the same as a original TRON LE 
most strange for us, while having the pinball home for 3 years, my son did complete PORTAL but not home, was in DPO "free zone" in Nederlands, and same for his hi-score (600+) was in arcade village at eurodisney in Paris/France
and about the active backglass mod, mine was from PINBALL CENTER (+ personal touch)
see:
Quoted from Frax:And if you have trouble getting to Portal, I can definitely do some schoolin'.
#20+PortalAchieversClub
where is this club ?
