I changed all 4 of my tyres to this recently. They are 16 inch ones.

So far the tyres has been of moderate satisfaction for me. I was previously using Michelin XM2. Noise level, moderate. Dry grip pretty good. Wet grip acceptable, going thru some moderate water puddle you will feel something. Durability, not sure since still new.

yesterday drove down to KL from Ipoh in rainy season.

Drove 100 km/h - 150 km/h, no sign of aquoplanning.
Just as Continental and Dunlop suggests, I think wet road is where D05 really performs. Now is raining season, very good chance to try out D05 performance in wet.

Last time using Ecopia 200 got torque steer when trying to overtook. Also during wet condition.

XM2 is better.

Been running with these (DUNLOP Formula D05) since Oct-2016.
After close to 10K km, I'd say I'm still pretty satisfied with the tyres.
Although not an extreme driver or frequent highway traveler, I still make monthly drives between KL-MUAR (dry & wet conditions on PLUS highway).

Here are my ratings for these set of rubbers after ~10K km:

Size & Specs: 215/45/R17 | Treadwear 340 | Temp A | Traction A
Noise: 6/10
Stiffness/Comfort: 6/10 (reminder that I'm on low-profile rubbers)
Dry Handling: 8/10
Wet Handling: 7/10
Cornering (sweeping corners at avg. speed 130~150 kmh): 7/10 - Dry | 6/10 - Wet (soft rain/wet road without puddles)
Downhill (Genting Highlands): 6.5/10 (Dry) *will not venture spirited-driving downhill on wet conditions there*

Disclaimer:
I'm not a pro driver, nor have used gazillion tyre brands/models.
However, I'd say that I have had a fair-share of experience (Pirelli P7, Bridgestone RE003, Toyo T1R, Yokohama A Drive, Yokohama S Drive, Kumho Ecsta Seven KU23, Silverstone Atlantis V7, to name a few that I've used).
I'll admit that I've very limited experience with Michelins and Continentals.
Anyhow, you get the drift

Hope this helps.
Nope, never noticed such occurrences on any of my tyres (prior or current, even after 1.5 week stationary).
Maybe that's because I've always kept a lookout on my tyre pressures(?)
The only time I've witnessed flat-spotting was on a friend 's Prado fitted with Bridgestone Duelers, and stationary for 3 weeks. That also was due to under-inflation.
So, I guess one could say that tyre pressure plays an important factor towards flat-spotting(?)