Insulated jacket recommendation for Mt. Rainier on first week of May

I am going to climb Mt. Rainier for 3 and half days on Muir route. I am looking for a recommendation for an insulated jacket.
So far I am looking at Arcteryx Atom LT hoody that is currently on sale for $180 or Patagonia Micro puff jacket. Unless you have any other better recommendation?

What does the rest of your layering system look like?  If you're looking for a parka to wear over the top to stay warm when stopped and at camp, both of those jackets will be far too light.  Are you going with a guiding service?

Note that many of the guides give very good advice on layering, here are some of the top Google hits:
https://www.outdoorresearch.com/blog/article/what-to-wear-to-climb-mount-rainier
https://www.whittakermountaineering.com/shop-by-summit/rainier-sbs?list=mens):
https://www.alpineascents.com/climbs/mount-rainier-climb-muir/gear-list/
https://www.mountainguides.com/rainier-gear.shtml

Either of those might work as a jacket to climb in (though I’d prefer a Proton LT or Nano-Air).  In addition, you’ll need a BFP - a big puffy.  I like the RAB Neutrino Endurance but many can do the job. 

Hooded Micro is awesome but you’re also going to need a bigger puffy for breaks or if the weather goes south. 

You should buy a Proton LT, waaaaaay better then an Atom LT. Having said that, yes I am selling one because I have several, but even if you don't want mine a Proton LT is perfect for this. A micro puff is great but does not breath or stretch, but if you are set on Patagonia a nano-air is almost as good as the Proton. As stated above you will also want a big puffy to put over it.  
https://www.mountainproject.com/forum/topic/117513903/arcteryx-proton-lt-mammut-40-below-western-mountaineering#ForumMessage-118219955

You might want a light puffy and a heavy puffy. May 20th 2018 I climbed in all 5 of my layers. Moving was ok. Sitting for breaks was COLD.

Kyle Tarry wrote: What does the rest of your layering system look like?  If you're looking for a parka to wear over the top to stay warm when stopped and at camp, both of those jackets will be far too light.  Are you going with a guiding service?

Note that many of the guides give very good advice on layering, here are some of the top Google hits:
https://www.outdoorresearch.com/blog/article/what-to-wear-to-climb-mount-rainierhttps://www.whittakermountaineering.com/shop-by-summit/rainier-sbs?list=mens):
https://www.alpineascents.com/climbs/mount-rainier-climb-muir/gear-list/
https://www.mountainguides.com/rainier-gear.shtml

I have 

Baselayer: smartwool 150 long sleeve and pant. Midlayer: Patagonia R1 pullover hoody.

Softshell jacket: OR ferrosi hoody
Softshell pant: OR Cirque pant

Sounds like you need something heavier, at a minimum. You might not need anything gigantic, but an Atom AR may serve you well.

Brad F wrote:

I have 

Baselayer: smartwool 150 long sleeve and pant. Midlayer: Patagonia R1 pullover hoody.

Softshell jacket: OR ferrosi hoody
Softshell pant: OR Cirque pant

Either of the pieces you originally listed would work as an extra midlayer for activity if it gets cold. As mentioned, a Nano Air or Proton LT would be more breathable and serve better as active layers. Or alternatively simply an R2 to go over your R1 for extra insulation since it looks like you're carrying a separate softshell.  

None of these would be a warm enough static layer for an average person. I would bring at least a midweight (~100g) synthetic. I use a Montbell Thermawrap Guide in the Cascades. You could try the Macropuff if you like Patagonia, but the fancy sewn thru pattern doesn't inspire confidence IMO. Wind will cut right through it.

I took a 60 dollar puffy from mountain hardware.  It worked great.