Player:	MortPlayer	Conduits Pocket Player	TCPMP	iPlay (1-October-2006 version)	WMP 9	WMP 10
AVRCP compatibility: WM2003 + HP 1.6 BT upgrade	-	+	-	Partial: pause / resume only; next / previous buttons also switch this	+	n/a
WM2003SE + A2DP upgrade	doesn't work on the 590A; with other headsets, it works	+	+	? (iPlay didn't run on my PL720)	+	n/a
WM5, native Widcomm (hx4700, T830 etc)	+	Works with some manual work; see the "Making the Pocket Player AVRCP work under WM5" section	-	+	n/a	+
WM5, Widcomm add-on (x51v)	+	see above	-	+	n/a	+
WM5, native Microsoft (x51v, HTC Universal)	doesn't work on the 590A; with other headsets, it works	see above	-	+	n/a	+
WM5, native Microsoft + A2DP hack (HTC Wizard)	see above	see above	-	+	n/a	+
CPU usage: no equalizer / DSP's:	13-14%	16-18.2% (with visualization entirely disabled)	8-8.5%	5.8-7% (measured on hx4700!)	12-14%	11-13% (measured on hx4700!)
With equalizer	The same	17-19%	11-13%	10-11%; DSP: reverb (4-Massive): ~22%	n/a	n/a