****I am not a regular reviewer of computer hardware but thought I would share a unbiased opinion on this monitor for the people that are having difficulty deciding.****
That was a very good review, considering it's your first one, thanks for taking the time to write it up
does anyone actually know what the difference is between these 2 monitors.
EW2420
VW2420H
You can see the differences of those two monitors in the photos on this page, as well as the BL2400PT which also uses the same panel :
http://computer.u-3c.com/article711.htm
There's also a comparison chart of specs near the bottom. The site's in Chinese, but you should be able to make out what the figures and model numbers refer to, if not then just look at the
Google translated version.
One thing that hasn't been mentioned I don't think, is that the EW2420 has built in 1.5w speakers, where as the VW2420H doesn't. This is probably accounts to why it's much heavier (6kg vs 3.9kg) and thicker, plus the fact the EW2420 has an internal power supply. The speakers are likely to be tinny and just plain awful, but at least it has some I suppose.
Other differences from what I can tell, some of which Legend has already pointed out, are the EW2420H has a 4 USB port hub, 2 HDMI ports (VW2420H has 1), you can use a VESA mount on the EW2420H - the VW2420H cannot, the power button and OSD controls on the EW2420H are along the side, the bezel/general aesthetics are different such as the matte section on the back of the EW2420H and the light grey border along the bottom where the speakers are I believe, the input connections on the EW2420H are facing downwards (which is better in my opinion) as well as having a Line In and Out.
The BL2400PT is similar to the EW2420H but swaps the 2 HDMI ports for a single DisplayPort, loses the USB hub but has as fully maneuverable stand (height, rotation, tilt & swivel). The bezel is fully matte as is the the screen (the EW2420H and VW2420H has a semi anti-glare coating) and the biggest difference is the BL2400PT has an ambient light sensor at the front that changes the brightness of the screen on accordance to the surrounding light. From what I can tell on that Chinese site as this isn't mentioned on the BenQ product page, it also doubles up as a movement sensor so it turns itself off if it detects no movement.
I think that's everything, the VW2420H is the no frills model, the EW2420H seems to be the best overall for general use (particularly since it has 2 HDMI ports) and the BL2400PT is the business model.
From looking at the prices, the BL2400PT might not be a bad choice considering it's stand, but the lack of HDMI might put off some as well as the full AG screen. The VW2420H is clearly the worst, considering how close it is in price to the EW2420H which has more features, I don't see why anyone would want to get one, unless they really like the look of it.
While I'm at it, I'll link this unboxing video of the EW2420 where they run through it's specs and show the semi-gloss screen:
http://www.youtube.com/watch?v=mLcfpF9u9QM
