Everybody has their favourites. Power armour to me, is my favourite element of Fallout and I was shocked by the change of the size in FO4, but came to love it.

Personally, I like the APA Mark I the best just because of it's badassery.

Discuss.

EDIT: I take back what I said about the T60. That thing is a beauty.

EDIT: Added a poll for users to vote now.

Definitely the original Enclave power armor (Advanced power armor). They look threatening.

I don't really like Fallout 3 Enclave power armor that much though.

Spoiler:

I'm big on the T-60 and the T-45, with the X-01 coming in behind that. Never liked the T-51 much, too "round"

Freakin' T-51, dudes !! I just LOVE the look of it ^^ ! I don't like Power Armor... But, the only one I can stand wearing is this one !!

T-51, always and forever. It looks and feels extremely utilitarian. It's not over-designed or trying to impress like those edgy enclave troopers and their black, streamlined armours. It's precisely the way I like most things to be. No-nonsense, functional and simple.

Gotta agree with you OP, APA I is my favorite too. My second favorite is the X-01.

T-51 all the way. It has the perfect combination of fiting the aesthetic and being functional. The APA (x-01) is a close second, pushing the design in interesting direction and also moving the design several decades forward (if T-51b is closer to old WW2 tanks, APA moves into 80s sleekness and adds character with the bug helmet).

The rest, well, aren't that good. T-45d is bland, with useless oversized shoulder pads. FO3 enclave armor just rips off Tactics armor and also has the problem of shoulder pads and being too bulky to be properly functional. T-60 contradicts the lore and has a torso plate so small, it protects nothing.

When FO4 wasn't out yet, my favorite PA was the Remnants Power Armor. The way the fan moves at the back is just frigging cool to look at.

Now my favorite of them all is the X-01 Power Armor. Too sexy to be real.

The t-51 and original Enclave Advanced Power Armour. Both are original and gorgeous designs. It bothers me how Bethesda just keep reiterating their own t-45, which just looks more generic to me.

I like the T51- helmet, I like X-01's Torso, and am indifferent to arm's and legs, but I'd probably had to say X-01 arm's to keep the shoulder bits, but I do prefer T-51's lower arms.

If mod's were included I'd say T51c Airforce Helmet.

Im a big fan of the T-60 power armour, i don't really use the others, even if i have access to X01, I like the design of T-60 over the X01 as well as i think the X01 looks a bit restrictive, but it does still look cool. However T-51 is a close second favourite (and i like the fact that the T-51 doesnt look rusty like the others)

I like the T51 Power Armor the best because it is the most iconic Power Armor of the series being featured on the boxart of the very first Fallout game. I love how it is basically tradition for the front cover of the boxart to show the new Power Armor available for the player to wreak havoc in.

I have always liked the Enclave power armors the most. They're just so cool, I like the retro sci fi mixed with some insect anatomy look to them. In Fallout 4 I was disappointed with the lack of Enclave armor, so when I found out the X0-2, Tesla, and Hellfire armor's mod was being made for Fallout 4 I was ecstatic.

Enclave Power Armor MK2 aka FO3 Black Power Armor. They're just awesome.

I will always love the t-45 power armor but it could be easily the enclave hellfire from fallout 3.

Definiately has to be the T-51 power armor in Fallout 4, it looks beautiful

The Enclave series of armors. They just absolutely look menacing. Not to mention their tesla variants which just doubles their epic factor. I really love FO4 version of this PA as it truly makes them seem really bulky, which just fits the enclave. I also love Unoctium's version of the X02/Enclave Power Armor MK2, really fits in. I can't wait for them to release the Hellfire armor and add that to my collection.

I gotta say, my favorite is the Tesla Mk.ll from Fallout 3, the mod that brings it to Fallout 4 really solidifies it for me as being the most badass looking of all the power armors.

Hahaha can we count modded PA like the Liberty prime ? Otherwise id say the enclave hellfire !

The power armor from fallout 4 sadly i can't se it myself only in gameplays, my rig is not that good