There is nothing special about the P7004 making it consistent with most low end portable DVD players.

The LG DP9821P is a reasonable option for those after a portable DVD player, but image quality and design problems keep it from standing out from the pack.

The DP392G is a great DVD player, with the additional advantage of functioning as a photo frame when needed. It has USB and memory card inputs, as well as a decent amount of picture adjustability. Quite frankly there's not much it does wrong.

If you are looking for a great portable DVD player, you should look elsewhere. Not only is the screen quality rather poor but at the price tag makes it downright insulting to your wallet.

The Panasonic DVD-LS80 is yet another mediocre portable DVD player.

The PET710 suffers from a lack of image and sound quality, although the car seat holder and the car charger adapter are handy for car travel.

Shinco's SDP-1720D has broad media compatibility and is easy to use, but its failure to recognise some DivX discs brings down the overall score.

If you're after a portable DVD player to keep the kids entertained on long car trips, you'll appreciate Shinco MDP-1770's clear image, support for most common media formats, and nifty extra features.

A competent, well-priced mid-range player with a simple interface and good screen, hampered by poor speakers.

An integrated LCD screen and DVD player, the Sony DVD Station is a cool little appliance, ready for you to watch movies when you're on the road.

Teac's DVP904 DVD player has a smooth and vibrant 9in screen and decent stereo speakers. Its battery lasts long enough for two movies and it comes with everything you need for a long car trip. It's let down by a very poor set of headphone outputs and a noisy DVD drive.

Although the inbuilt speakers aren't the best, the SD-P2900 otherwise comprises quite a high quality and functional portable DVD player. If the price tag doesn't deter you, it's well worth considering.