1) A long Island Railroad RS1, RS3, C-420, or C-Liner
2) Green or Blue Q-Type subway set (powered)
3) All from a vendor with a Website with Online Ordering
4) A vendor with updated online inventory
5) A vendor that does not take 48hrs or more to reply by email or phone
6) A vendor with a website that works
7) A vendor with a website that does more than show their address, email, and phone number with links back to MTH where I just found them.
8) A vendor that wants my money
This excludes the wobbly conventional RS-3 from the set Lionel released, ebay vendors who charge more for shipping than the item, or shill bid.
And also excludes any vendor who answers the phone and sounds like I am bothering them.