Which Nokia Lumia is better?

[Francis G]

Your question is in fact 2 questions (if NOT 2 questions there are 2 answers)

Microsoft Windows Phone 7.5 [WP7.5] Mango, upgradable to v7.8 (but NOT to Microsoft Windows Phone 8[WP])

Due to this the price of WP7.5 has dropped like a stone which is not to take away from features, these are V. GOOD phones

The TOP TWO are the Lumia 900 & Lumia 800 Here they are side by side
http://www.gsmarena.com/compare.php3?idP...hone2=4240

Microsoft Windows Phone 8 [WP8] are the very latest and can have BOTH Dual Core & microSD expansion
The TOP TWO are the Lumia 920 & Lumia 820 Both are 4G LTE on ANY/ ALL UK NETWORKS! (Just EE has 4G LTE so far up & running)
Here they are side by side http://www.gsmarena.com/compare.php3?idP...hone2=4968

Choice is chose a cheap (PRICE ONLY] WP7.5 or pay a premium for WP 8 ?

The other you list are either WP 7.5 or WP 8 which have less features than the top phones shown above