Which is IU's peak?

In the thread IU vs BoA, a BoA-ster was insisting that Good Day(2010), You & I (2011) was IU's peak.

The implication being that IU declined or stagnated after that, or the weird logic that her subsequent success is only inflationary keeping up to the expansion of Kpop itself and not any peak by IU.

Still this is worth exploring,

What period/year/album/release can be considered as IU's peak in her career so far?

2017

Palette, followed by other things like Flower Bookmark 2, Hyori's homestay

• 3 songs of the album took PAKs and Gaon #1 (so #1 on multiple charts)
• Through the night, rules Gaon longevity charts with BTS-Spring Day.
• TTN also won IU GDA Digital Daesang and Bonsang
• Won Album of the year at MMA and SMA, IU won the Best Songwriter at MMA.
• Hit #1 in US Billboard
• Featured articles in the West 'Power of Personal Kpop'
• 'Dear Name' performance at MMA became a legend.

• Autumn Morning PAK and probably the only instance when IU released alongside BTS (DNA) , and establishing that IU is one act, not fazed by the BTS bulldozer.
• in 2017, her collab with Epik High - Love Story also hit #1.
• And 2017, was also 'Hyori's Homestay', another success for IU

So unless 2021-Lilac achieves major year end awards, and her movie 'Broker' brings accolades and

now that 'Dream' shooting has been postponed, if she succeeds with Flower Bookmark 3 within the year.

effectively repeating the successes of 2017,

Palette-2017 indeed is her peak so far.

Though personally I enjoy 'Modern Times' the most.

Quote from chat-2

IU's peak is her kakakakakakakaka kakakakakakakakakakakakakakakakakakakakakakakaka song

It has the biggest number of Melon rooftop hits in history (86)

Infinite Challenge?,, well she caters to all tastes.. doesn't she :)

Quote from haj1ma

musically speaking think IU peak was modern times. I am not sure about charts tho since I don't follow them that much.

Modern Times is my personal favorite too.

But peak has to be decided based on charts-sales etc.

Quote from bbgc

So unless 2021-Lilac achieves major year end awards, and her movie 'Broker' brings accolades

Revisiting the thread.

Lilac did win major year end awards and Broker did do well at Cannes.

So what is IU's peak period?

IU has multiple peaks and yes she is not slowing down either.

But the question is, so far -which has been her 'peak-est' peak?