Should I get the HTC One or the Nexus 5? (Coming from an iPhone side)?

Hi
I'm debating whether to get the HTC One or the upcoming Nexus 5
I used to love the iphone but now i'm just unbiased (because i know ill never be able to afford the iphone haha)
The price doesn't matter i can get the HTC One for 430 and the Nexus 5 would be 399, not much of a difference
now the thing is that i love the look of the HTC One, including SENSE 5.0, which looks amazing, unlike the black and blue stock android. Coming from an iphone side, sense 5 looks a lot closer.
But what i'm worried about is the support. I mean htc one is already like 8 months old, and there are rumors of a refreshed version of it in 2013 (this year) (that my carrier Wind Mobile won't be getting anytime soon after its release), and rumors of a second HTC One in 2014 (which my carrier also won't be getting anytime soon after its release), so pretty much i'm stuck with the htc one only.
So what do you think, as a fan of software and hardware design and coming from an iphone side, should i get the nexus 5 just because its gonna be newer and longer support? (speed won't matter for me that much), or get the htc one because i love its design and software even though its already 8 months old and there are 2 newer models coming soon? Will the htc one still be fast and up to standards in the next 2 years (because if i get it, i'm stuck with it for 2 years until i can get a newer phone)?

all opinions are respected
thank you!

Added (1). In my question i said that faster speed of nexus 5 won't matter that much, but i meant for now. But in 2 years, will the htc one still be fast enough?

Added (2). Rocky - how do install sense 5 on a nexus device? Does that only change icons or even apps (eg.settings app will become exactly like that of sense 5?) thanks

Get the nexus 5. I have the nexus 4 and there's a lot you can do with it once you root it. You can install Sense 5 on the nexus 4 too