A Straight Comparison of Sona & Nami
One of the things I say a lot is that Sona is simply a worse Nami. It's also a statement that I've heard many people repeat and one that I've heard people rebut by simply saying that Sona's win rate is better than Nami's and therefore she must be better, which is terrible logic.
I wanted to write out as complete of a comparison of the two champs as I could to show why by simple numbers and aspects of their kit Sona is a worse Nami.
Poke: (assumes Q-passive AA for Sona and W-E AA-Q for Nami)
: 568.8+(98%AP)
: 610+(120%AP)
(No Q): 315+(70%AP)
Maximum Burst: sum(basedamage)+sum(ratios)
: 918.8+(148%AP)
:960+(180%AP)
DPS: sum(Basedamage/CD)+sum(ratios/CD)
: 63.4+(11.58%AP) per-second
: 79.18+(16.05%AP) per-second
DPM: sum(basedamage/manacost)+sum(ratios/manacost) (Sona's passive cost=W+E because that's what you pay for it in a damage context)
: 9.74+(1.75%AP)
: 13.59+(2.62%AP)
HPS: baseheal/CD+ratios/CD
: 11+(2%AP) to 16.5+(3%AP) (on a dead target)
: 18.5+(3%AP)
HPM: baseheal/manacost+ratios/manacost
: 1.1+(0.2%AP) to 1.65+(0.3%AP)
: 1.42+(0.23%AP)
Other advantages:

- Has a shield
- Speed Boost slightly stronger in terms of raw speed boost into the late game. Usually works out to around 5 Ms.
- Has better boobs? Probably the best reason to play Sona.
:
- Has hard CC on a basic ability
- can slow reactivly
- gets better trades since her heal and damage are on the same spell
- has better skill rankings for the same reason
- speedboost is stronger in the early game
- doesn't need to be suicidally close to an ally to have an impact.
- better base stats
Basically the Nami holds around 10 solid advantages over Sona while Sona has 3 shaky at best advantages, sometimes Nami can actually outdo her in these areas if played correctly.
When all Sona can do is poke very slightly better and sometimes Nami can outdo Sona in that area why should I pick Sona over Nami?

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procs on your whole team. Other than that you should pair Sona with an adc that can make the most use of her Q passive, my favorites are
