OK, in all seriousness...
If they don't mind paying outlandish prices for what is sub-standard gaming, get an XBox. Definitely the better of the two. Superb games, and even the original releases surpass most PS2 games and can be bought for £20. And then there's the option of XBox Live!, a mutliplayer gaming network which is apparently the bees knees. It's fast emerging to be the PS2 beater.
But if it's quality of games you want, can I suggest a retro console? A Dreamcast or Saturn would be fantastic, games are as low as £3 each, and ooze playability out of their ears. Yes, there are more games for PS2 than for XBox, but games are £40 or so each, a HUGE rip-off in my opinion. But then again, so are PC games.
Shop around. Gamestation seem quite open and honest as to the quality (or lack of) of consoles and games, but I trust an independant family-owned games shop more than a chain. The bloke in the local one (A&B Games) actually tried to convince me NOT to buy a certain game once, saying, "It's rubbish, and I'd feel guilty selling it."
The best deals could well be on the web these days. Bit late for Chrimbo, though.
