Both units feature motorized touchscreen LCDs (6.5-inch for the 4900, 7-inch for the 5900) and XM and Sirius connectivity, but the 5900 one-ups the 4900 with the inclusion of iPod compatibility and sync-support for Bluetooth phones thanks to an optional CD-BTB100 Bluetooth adapter.

ENGADGET: Pioneer announces in-car AVH-P4900 / 5900DVD entertainment systems

If you're serious about including the PS3 in your setup, you could splash out on Logitech's Harmony IR-to-Bluetooth adapter.

ENGADGET: Ask Engadget: best universal remote?

Ericsson made some interesting accessories for the T28, like the "CHA-10 Chatboard" (a QWERTY keyboard for text messaging), the "MP3 hands-free kit HPM-10" (an MP3 player with an MMC card slot and standard 3.5mm headphone jack) and the aforementioned "Bluetooth phone adapter DBA-10".

ENGADGET: Ericsson T28z review Mobile

Other long-delayed tech projects include the Syre, a Bluetooth wristband adapter for the now long-discontinued sixth-generation iPod nanos originally due to ship last November.

ENGADGET: Switched On: Higher stakes, higher ground for crowdfunding, part 1

Nevertheless, we did run a few Wii and N64 games quite happily using the Dolphin emulator running with a WiiMote, a third-party IR bar and a Bluetooth adapter for the PC.

ENGADGET: How-to: Build a multi-talented HTPC for (roughly) $1,000