That is a very general question and hence quite difficult to answer. I suggest that you take your time in deciding a brand and model while carefully reading a range of good PC magazines such as PCW and PC Pro (though since your post mentions euros, are you outside the UK?) Look for a pattern in PC magazine group tests (some of which focus on gaming PCs) and you'll soon work out which brands are good bets and which should be avoided. Once you've picked a brand, come back here and search the forum to get a picture of customer satisfaction and reliability. Ample praise and few complaints are good signs.