When you describe it like that, I completely agree about having a good range of devices - that have differentiating features.
The problem I have is that we're left looking at a line of devices that are (superficially) very similar to look at and who's to know which ones are actually worth the money and which ones are more land-fill?
Take a look at this page: http://www.htc.com/uk/smartphones/
Aside from the two Windows 8 devices (proving that it's not just Nokia that make them), the rest of the phones on the page are distinguishable by small variations in size (don't forget, they're all scaled to one size), by name... err HTC One - One SV, One X+, One XL, One X, One S and One V... wtf? By the marketing tag rubbish such as "Simply stunning" or "Exceptional performance comes standard" and the inevitable near 5 star rating lies that we expect to see on a manufacturer's own website.
There's probably only one or two phones on that page that are worth the bother for the money, a couple that are penis extensions for those with money and the rest? Probably land fill.
Looking at a similar Nokia page: http://www.nokia.com/gb-en/phones/lumia/ the problem's the same. Other than a couple of more rounded, possibly smaller, devices they all largely look the same and feature the same baffling product numbers that seem to make little sense and there's no order to on the page.