A great buy in a 1-AA cell light, a bit larger than those Fenix lights, is the current 'Inova 2.0W X1'. It is fairly bright - and very hungry, flattening an alkaline AA in <2hr. Of course, it has a few good points - it's widely available - try 'Target' and 'Academy Sports' stores in your area - it's available in silver or black - it's relatively affordable ($20) - and it's, gasp, made in the USA!
All that said, I got a Fenix '4 in 1' set from the Fenix Store Monday - ~$67 inc s/h. It's a CR123 P2D Q5 Premium light with a spare P1D AA battery tube and switch, as well as a holster, diffuser, lanyards, and boot & o-ring spares. Just the light, with discount, would be ~$55, so it's a deal - and you can decide whether or not you like AAs or CR123s. The P1D is slightly larger in OD than the Inova X1, and a tad shorter - essentially the same size.
Stainz