What do you guys think is the quietest Repeating PCP?

Well that's a matter of opinion lol. If you aren't looking to do really much other than pick of those pesky starlings. I would recommend a .177 with a moderator. Mouse fart quiet.

I don’t know about the quietest. But I can tell you it’s on the list. 
A suppressed Benjamin Marauder Pistole 

ANY SUB 20FT LB 177 WITH AN EMPEROR OR HUGGETT MAGNA THE LARGEST ONE HUGGET MAKES. Yo

Crosman/Benjamin Fortitude comes to mind.

HW110 .177 nonFAC 

HW110 .177 nonFAC

Click to expand...

EXACTLY I CONCUR. I got a 177 sub 12ft LB HW110 it's quietest straight out of the box rifle I have ever owned and it's even quieter than a 177 Marauder sounds like a quiet spit when shot. 120 shots on a 200 BAR fill. Great recommendation WAHOOWAD! Yo!

The quietest in my experience is a Taipan Veteran with Donny Sumo silencer added. I have an HW100 that is almost as quiet. Both are standard, 30 fpe .22 versions. For your purpose, a 12 fpe .177 would be perfect.

My 22 streamline with a donny fl is the quietest pcp I have heard to date, it’s just insane. I would imagine the dreamline platform is the same.

I have heard quite a few pcp’s over the past year and nothing has came close IMO: redwolfs, crickets, edguns, daystates, marauders, gauntlets.....

Any of the taipan veteran..are the quietest gun I ever had quieter than the crickets..even shooting the 18g at 960 fps with a koy you simply hear a puff of air...the .25 with a shogun the same...I don't think that any other gun could come close to shoot at high power..so quietly..

Taipan veterans with a Donnyfl are just spooky quiet

Joe Brancato's 22 cal RAW worked over by AZ. I thought it was broken it was so quiet.

. 177 hw 110 12 fpe in my opinion also. 

Marauder

FX Royale with a Hugget installed.

Career or Sumatra set around 700-800fps with a pickle.

Veteran with a pickle.

Huben with a pickle.

Az tuned full bull shroud rapid .20. You think the gun is broken.

.177 first gen Marauder. Loudest sound is the pellet strike. Quiet, no frills, very reasonable priced, very accurate to 25 yards pesting.

Az tuned full bull shroud rapid .20. You think the gun is broken.

Click to expand...

OH THAT ONE IS PROBABLY THE QUIETEST GUN ON THIS THREAD. Yo!

Exactly what I said about Joe Brancato 's Rapid.

Joe Brancato's 22 cal RAW worked over by AZ. I thought it was broken it was so quiet.

Click to expand...

Oh that one too! Yo!

"You'd think the gun is broken" or "out of air"... HMMMM... I definitely recall hearing these before... Yo!