mpett1... being totally serious between those I'd get the E25. Fantastic light. After owning Fenix lights using the side switches for a while I feel very confident in them. Tail caps and switches have the potential to loosen imo. I had the 1st gen xp-e E25 and it was a great light. Super short, can tailstand, good throw.
Go with the E25 unless you need the more tactical E20. Both have really new versions using xp-e2's I believe. The E25 high mode is now 130 lumens from 187, but that's not a big visual difference. And it has a 260 lumen burst mode now.