LG is just a manufacturing partner & hardware blob supplier for Nexus 5. On OS side they don't do sh*t.Google take care of it. Don't be too afraid of Nexus devices software things.
My experience after using Nexus 4 for almost 10 months is I feel like LG's support for hardware is quite good. The repair parts for Nexus 4 is much cheaper than other devices and the repairs are done quite fast if the parts were available.
On software side, it's a Nexus device.No need to say more. It does get updated promptly.
The only bad thing about Nexus 4 in Malaysia when it was launched in Malaysia was the carrier exclusive by DiGi. They bought the right to distribute Nexus 4 in Malaysia & at same time had right to set the RRP themselves. When N4 LGE Malaysian set was first sold in Malaysia, it was sold for
RM1649. Roughly RM400 more expensive than US price. The price went down fast in a month. Initial buyers felt like suckers

I feel like the appropriate for N4 should be around RM1.3K plus.
Back to Nexus 5, I'm still considering about upgrading to Nexus 5. If the RRP for 32GB was set around RM1.6K I might seriously have to consider upgrading.
Corrected.