Any alternatives to Astell & Kern DAP's?


I'm looking at the A&K AK 100 -2 but at $900 (cheapest I could find on the internet) it caused me to pause. Is there any alternative that would be less expensive? The Ibasso DX90 is something I would consider but the reviews I've read are mixed. Would appreciate any feedback you could give me. thanks.
russellrcncom
The iBasso and Fiio units have gotten good reviews. There are several models of each starting at $99...

-RW-
I prefer the sound quality of the latest iPod Touch 64gb model. Plus it can do Pandora, Spotify and Tidal. For travel I like a device that can fit in my shirt pocket. Have heard good things about the Sony NWZ A17.
Present: 7 Gen iPod 160 gb + Fiio Andes (E07K) + Kef M500. Plenty of detail, space and very good bass.

Future: Lenovo Vibe Shot + Oppo HA-2 + Kef M500.