Gravitates once more to the shorter word. Asks for another vowel before the R. Doubts -yr, -ir, and -ur. (Will probably get to them eventually.)
-or: Vapor and Valor. NOT Manor, Razor, or Gator.
-er: Laser, Wager, Pager, Baker, Maker, Pacer, Caver, Waver, Saver, and Gamer. NOT Water, Rater, Racer, and Tamer.
(Note to self: Tapir for -ir.)
Made that decision easy. Could have missed some possibilities, of course.
Hesitates to declare a vowel between the first word's N and T. Creates long consonant strings with compound words (example: Bellsprout). Occurs in the right spot for one.
'E', please.