stick to stock size, no need alteration as you're already on 17"
215/45/17 easier to find sizes and cheaper too as more tires produced for popular sizes hence cheaper price too.

for your criteria, since no budget is specified, consider yokohama Advan DB, it is their flagship comfort/low NVH tire
or can consider Nitto Invo, also their flagship in luxury/comfort/low NVH tires
if wet grip is your priority while you don't mind a little bit nvh compromise (compared to advan db/invo anyways) you can go with good year's flagship tire - Eagle F1 asymmetric 2

if you want safety (as you said, better wet grip) and good NVH, such tires will have to sacrifice on durability/lasting tread as they are typically constructed much softer
however if you don't drive fast/aggressive, they WILL last easily AT LEAST 50-60k km as these tires afaik are rated OVER 300 treadwear assuming you properly maintain them with correct pressure, proper alignment etc

most comfort should be Yokohama Advan DB, Nitto hard to say since it is just recently emerging in Malaysian market.

and yes, if you do not drive fast. eg: not over 100km/h in wet conditions, even basic cheap tires will suffice, however yes, having better tires will definitely be able to cope for emergency braking should it arises

for the 3 tires i mentioned, (for easy sake let's group comfort and nvh together):
1) goodyear
2) Yokohama
3) Nitto

however if you put wet grip as last, it'll be
1) Yokohama
2) Nitto
3) Goodyear
and depend if you want nitto's aggressive/unique tire tread styling (it is mainly marketed to american market, and it is under Toyo too btw ) and maybe slightly better performance, you can rate it above Yokohama's advan DB

For Michelin PS3, it is a jack of all trades, master of none tire.
it is quiet/comfortable, however won't be as comfortable/quiet as Nitto invo/Yokohama Advan DB. it performs good in wet conditions, however it won't ever be as good as GY Eagle F1 AS2 as that tire benchmarked by sports car under wet conditions and it is after all, GY's flagship tire while PS3 isn't michelin's flagship
That, and Michelin's tires are typically overpriced (of course one could probably argue the same with Yokohama's Advan lineup as it is their flagship tires) so personally i don't favor with Michelin tires at all

if anything, it's treadwear does last long, however i don't think it'll be any much longer than gy/nitto/yokohama.
treadwear wise its ps3 (320) > eagle f1 as2 (300) > nitto (260), can't seem to get utqg rating for yokohama, however it'll be around 300/300+ around ps3/goodyear
and long lasting treadwear tires *TYPICALLY* don't perform well in performance/comfort/nvh as they are harder tire compound

not for Advan DB, although iinm their advan db does not have UTQG ratings as they tend to market advan sport over America since most oversea customers do demand performance in their luxury vehicles, not just comfort/nvh.

http://yokohamatire.jp/yrc/japan/searchbytirebrand.html
advan sport isn't exactly a comfort tire as you can see.
latest advan sport v105 (also uses their orange oil compound) are 240 treadwear rated

and oversea advan db isn't widely market which is why i don't think they have a proper UTQG rating.
That said, the old DB e-spec, has a 460 treadwear rating
http://www.tirerack.com/images/pdf/t_w_cat.pdf