If the value of the XBOX add-on will pay for a standalone player, thats a viable option. But how much do you think you will get for it? Since the format is dead, chances are you'd get practically nothing, because who would buy a used POS player for a dead format? But I guess look into it just in case. The only bad part about getting a standalone player is that you'll have another piece of hardware crowding your shelf but if thats no bother then I say keep the HD-DVD disks. Why buy something again when you already have it? The Blu-Ray versions, if they are not already available, will probable just use the same HD-DVD encode anyway.

If you want to get rid of them you will definitly lose money because I'm sure stores won't give you much for them because again its a dead format. I don't think it will be that long until all the Paramoun and Universal HD-DVD titles are on Blu-Ray--I'd say by Christmas most of them will be available. But you'll basically be paying for most of them again. If you sell the XBOX add-on and all 12 HD-DVDs maybe that would pay for half, but thats still six Blu-Ray titles to buy. But I guess thats the cost of the format war. Somebody has to lose.