Just a question, although I'm pretty sure I know the answer: Does the G27 have the same length of barrel sticking out from the slide as the 26 does.
Either way- I'm leaning 26. Why do I want a small frame pistol? 1) Because I can. 2)It'll complement my G17 and finally- 3) My sister is getting her RPAL to use guns, but doesn't want to own any of exclusively, and the G26 fits her hands perfectly. An extremely nice member at my range let us fondle and fire his.
EDIT: Also, since Questar is the only site sponsor who has them available (I don't mind the 2-week wait), when I order I might see if they can thread the barrel and throw in a thread cover just to make it look a tad better, even though I really don't mind the 106mm barrel.