Dell allienware laptops are good especially the m11x, it was rated as the best gaming laptop (I think for 2010), however Acer sells good poweful laptops and Razer has released its own laptop which is also very powerful.
For a high performanced laptop, you are looking around £2,000+ from alienware. There are other laptops like HP Envy etc.
Alienware is an American computer hardware subsidiary of Dell. Alienware is a manufacturer of high-performance desktop, notebook, media and professional computing systems. Alienware has become a popular choice for those looking to build computer gaming systems and also offers its customers unique case designs and trendy system.
It really depends on what his preferences are and what he is looking to use the laptop for. If price isn't an issue and you are looking for something user friendly, I would definitely check out the laptops Apple has to offer.
To be honest, you should watch out for cheap laptops. With laptops especially, you get what you pay for. If it's too good to be true, it probably is. If you do get something cheap, get an excellent and full coverage warranty for at least 3 years.
If your looking for a good gaming computer try alienware. If you're looking for an expensive gaming computer try alienware. If you're looking for a good one try Overclockers.
Avoid any "designer" PC brands such as Alienware, Dell, HP or Apple if you are looking for good value for your money. These brands are highly priced for design. If you want to save money and get the same good quality, go for a brand such as Asus, Acer or Lenovo, which all offer custom built laptops.
If you are looking at the very very top of the range then you are looking at around £700 and the lowest range about £200 something. But you can get good laptops for around £400 £500
Alienware computers are the best computers you can buy with the latest technology in them. But with the latest technology, comes a big price. So make sure you are spending your money wisely, I was going to get an alienware computer but I've been looking at iBuypower and CyberPower computers so I'm not too sure if I'm going to buy an alienware anymore. I can get a computer for like 2/3s of the price I was thinking of and they don't come with moniters so you have to buy your own screen.
Apple laptops are expensive but well worth it, in my opinion. If you're looking for something a bit cheaper but still reliable, Dell and HP both make great laptops.
When looking for bargain laptops online their are many sites that claim to sell bargain laptops, budget priced laptops or discounted laptops. The Laptop Value website claims to sell bargain laptops.
In general, Alienware makes quality but expensive desktops and laptops. I would only buy their products If I was a professional video game player, or had a job that required high-end hardware. Unless you plan on playing a lot of games that require high-end hardware, I would not recommend buying the M17x. If you are still content on aquiring a powerful machine, I would suggest looking into the Sony VAIO laptops. My roomate has one, and it is able to do play the most demanding games on the market, while also serving as a relaible machine for school work and media.
The current range of MacBook laptops is available for looking and buying from the usual website.