If you're looking to buy a Nokia Lumia smartphone you've got lots of options, from the latest high-end device (Nokia Lumia 920) to the cheaper, but still handy,Nokia Lumia 900, to Nokia's mid-range offerings (the Lumia 800 and 820). Here's our guide to which Nokia Lumia smartphone is right for you.

First, let's explain how the numbering for these devices works. Nokia Lumia models aren't release in numerial order, instead, the Finish company has divided it's offerings into two categories, high-end and mid-range. Last year this strategy was introduced when Nokia released the Lumia 800, quickly followed by the high-end Lumia 900. This year, Nokia is preparing to release updates to both the 800 and 900 line, with the Lumia 820 and 920, and will be available in time for the holiday shopping season.

Design: Both the Nokia Lumia 800 and 900 come in Black, Cyan, Magenta and White models. The upcoming Lumia 820 comes in Yellow, Red, Grey, White, Black, Blue, Violet, while the Lumia 920 comes in just Yellow, Red, Grey, White, Black.

Last year the 800 featured a curved AMOLED Gorilla Glass screen, while the 900 had a flat AMOLED Gorilla Glass screen. However, Nokia's latest line of smartphones are both curved, though the 820 is noticeably all curves while the larger 920 features a more subtle mix of curves and hard angles. From a design perspective the 820 may be the most interesting of the batch, it's all-curve design is original, innovative, and allows for changeable shells. The 920 looks more like previous Lumia models: a flattened cylinder.

Specs: The Nokia Lumia 920 is the largest Lumia smartphone yet. It's dimensions measure 10.7x70.8x130.3mm and it's screen is 4.6-inches (diagonally) and it weighs 185g. The Lumia 820 is the thinnest model (9.9 × 68.5 × 123.8mm with a 4.3-ich screen ad weight of 160g). The Lumia 800 is the thickest of the devices (12.1 x 61.2 x 116.5mm, screen: 3.7-inches, weight: 142g). The Lumia 900's dimensions are 11.5 x 68.5 x 127.8mm, it weighs 160g and sports a 4.3-inch screen.

The Nokia Lumias 800, 900 and 820 all feature a screen resolution of 480x800. The Lumia 920's display resolution is an impressive 768x1280.

The Nokia Lumia 920 features the most powerful battery (2000mAh), offering up to 10 hours of talktime. The Lumia 800 (1450mAh) is a close second with 9.5 hours of talktime (the Lumia 900's 1830mAh lasts 7 hours and the Lumia 820's 1650mAh lasts for 8 hours). The Lumia 920 and 820 also offer wireless charging thanks to new Qi technology.

The Nokia Lumia comes with 32GB of storage. The Lumia 820 holds 8GB. The Lumia 900 and 800 holds 16GB.Only the Nokia Lumia 820 offers storage expansion (up to 64 GB via MicroSD).

Features: All four Nokia Lumia smartphones feature Wi-Fi connectivity, and all of them (except of the Lumia 800) also come with LTE Connectivity.

The Nokia Lumia 920 features the much-hyped Pureview Camera, while the Lumia 800, 900 and 820 all feature the same, powerful 8 megapixel camera. All the cameras feature Carl Zeiss Tessar optics and similar resolution. The Lumia 800 is the only smartphone lacking a second, front-facing camera.

The Nokia Lumia 920 and 820 will come out of the box with Windows Phone 8, Microsoft's upcoming mobile operating system upgrade, which is expected to bring the sleekest and most impressive version of the OS so far. The Lumia 800 and 900 models will be able to upgrade from the current 7.5 to 7.8, although upgrarding to Windows Phone 8 is impossible because of the smartphones' single core processor.

All Nokia Lumia smartphones come with the company's usual apps, including Drive (directions), Maps and Music.

Price:

Last years' Nokia Lumia 800 and 900 are currently on sale for around $240 and $450, respecitevly. However, those prices may drop further after Nokia's latest line of Lumia smartphones hits stores. The Nokia Lumia 920 will cost around $775, while the Lumia 820 suggested price tag is around $640. Nokia and AT&T are currently offering a special deal on the Lumia 900: you can buy the smartphone for just $49 if you also purchase a cellular contract.

Check out even more information on the chart below, courtesy of Wikipedia: