Besides the HP M1522nf, also looked at:
Lexmark X342N
Dell 1815DN
Brother MFC-886DN
All are laser-based all-in-ones that sell for around $300-400 USD and are around 23-27 ppm.
HP claims first-page-out time of 9.5 seconds from sleep mode, yet uses helf the power of the Brother and Lexmark printers (according to HP tests).
