I actually have work with EPSON unit with similar specification to the vs315w with regard to input and output , and find this a very comfortable personal fit . if I be to gauge the market for this I would push it toward people who be not early adopter and probably be use 3 or 4 year old computer , dvd player -lrb- heck , even VHS player -rrb- , and do not depend upon high quality sound . people with older equipment -lrb- I -rrb- will like this projector most . VGA video input and display be excellent . rca cable audio\/video input be excellent video , audio not so awesome . usb audio\/video input work , but be overall inferior . hdmus input ? not a issue for I . if you need it , do not get this box . the sound quality through the projector be mediocre which should not be a surprise for any projector of this class . the video be not for cinephile , but if you do not push the projection distance or the room lighting , the video quality can be excellent . set up for optimal distance and lighting be something that be almost only resolve in the specific environment where the equipment be use . my requirement be old school - primarily be able to use VGA to VGA for video input , or to use rca cable for audio\/video input -lrb- primarily video -rrb- . about the only time I would use the build in sound be when I be test something , or in a emergency when I do not have time to set up as I wish . the vs315w 's speaker be serviceable , but in the same way that a lot of laptop and tablet speaker be serviceable . best use in intimate setting , you will hear the sound , you will not be impress . even though it be market for its portability and easy set up and play , this be not my first choice as a stand alone . my one test with the usb input be quite unimpressive . the driver install on laptop easily , and it hook up easily . static video display -lrb- slide -rrb- be fine , but motion can be `` iffy . '' sound be actually similar to the other hookup , but with such crummy video I be not sure that matter . I also set up this unit in these two way : 1 -rrb- hook up video with VGA to VGA cable to 4 year old Dell Inspiron laptop . screen be about 20 foot from projector in a `` medium '' light room . for sound in this scenario I just run a small sound out patch cable from the Inspiron into a separate boombox and use that for my portable speaker . I have find very few projector have any decent sound . you would be surprised how use a portable sound system with nice speaker can enhance the video experience . anyway , follow by a little tweaking use the vs315w 's pretty standard menu system , and rely on the excellent automatic anti-keystoning feature -lrb- plus I love the manual keystone control button located conveniently on top of unit -rrb- I have a excellent 1280 x 800 wxga image project in a couple of minute . I run some dvd video through my pc and notice some jaggedness and some color problem - the fancier the video -lrb- e.g. , Transformers -rrb- the worse the performance . animated film come across beautifully , but they do have simpler color pallet and less demand on motion . the one powerpoint presentation I use have no true video , but quite a few animation which display to perfection . 2 -rrb- hook up video and audio with rca cable from my $ 20 Memorex dvd player . Video and sound be almost exactly as above . again , I prefer external speaker so I detach the white\/red rca sound connection and run the dvd player 's sound through my boombox again . obviously , none of this be the portability be market -lrb- carry around a dvd player or laptop , with extra boombox and this projector -rrb- . I give this four out of five star because it do what it say it do it within the publish specification . one star be knock off because the one fairly unique feature , the usb plug and play , do not seem to be ready for prime time yet . I 'll personally be use this primarily for in-office presentation in the configuration describe above .