I'm picking up one of those Samsungs today so I can let you know how it works.
I currently have a KOSS KD365 ($50) that doesn't play any of my DVD-Rs so I'm taking it back to Sears and they are exchanging it for the Samsung for free (it's normally $60) because they are out of the KOSS and I bought their warranty thing.
I have an old Sony DVP-S360 that the DVD-Rs all work in but the Koss won't read any of them.
I also use a Lite On 411S and I use CloneDVD to make all my movies. I'll update this tomorrow with my results from a quick test tonight.
Also, according to info I've seen, ths Samsung P241 plays DVD, DVD-R, CD, CD-R/RW, MP3, Picture CD and JPEG-encoded discs
It doesn't list DVD+ at all in there or SVCDs. But of course my Koss DID list all those and didn't play them so I guess we'll see.
Someone feel free to bump this later tonight so I remember to post back if it works.