Sunday morning is about to sneak up, and I think I've gotten my hold out to finally step away from his stand of "it must be published by TSR or WotC or it isn't legit". Trust me, it wasn't easy ;)
So, the three choices I'll be presenting them are:
AD&D 1e / OSRIC - probably the closest to how we played back in our High School / College days, but with a crapload of house rules I'v gained in the intervening years. Problem is, half the group no longer has access to their 1e books and I suspect the other half no longer remember what's in their 1e books ;)
Basic Fantasy RPG - close enough to the AD&D rules with some modern sensibilities. They can get a new print copy of the rules from Amazon for less than 5 bucks. I could run Morgansfort as is with the minor conversions needed for the other systems on this short list.
Swords & Wizardry - I'd run with the core rules, but allow the players if they wanted, to grab a class from the Complete rules if they desired. Most streamlined set of rules on the list, and may be the best to bring back gamers who haven't played in 16 years nearly to the week (I think our last game was March 2nd, 1997, assuming that was a Sunday - after 16 years, I know the day of the week, as we always games on Sundays, but I can't be sure the day of the month - it was the first weekend of March).
At least all of the options are available in PDF
There you have it - the three choices I will present. I'm interested in hearing your ideas on this. I'm leaning towards S&W, but that might be because with the recent Kickstarter package that arrived, it's my new shiny :)