I really can't decide.

i love them in all seasons

i think they really prove there love in this season

all really. season 2 - piper chose dan over leo <3
season 3 - they get married <3
season 4 - i just love them in this trying for a baby and ev <3
season 5 - Wyatt <3 (didnt like the end of s5)
season 6(courtship of wyatts father) - just that episode with piper and leo rocks! <3
season 7 - where they try and get back together and also where piper helps leo through his floating head stage! <3
season 8 - all of it cause they are together, loved the last eppy where he came back <3 hated it when the AOD took him :(

I REALLY LIKE THEM ALL BECAUSE IM A WITCH, A REAL LIFE WITCH I SWEAR OF GOD!!!!!!!!!!!!

I picked season 7 cause i would have picked season 8 but he's gone most of it b/c of the stupid Angel!!!

They were in the less trouble, they were normal enough!!:):)

I love season 3 cause it was cute season 1 she didn't know about him yet season 2 she was Dan and confused season 4 she still dealing with the pain of her sister dying and trying to have a baby season 5 i was kinda good they had Wyatt but he left her at the end season 6 they werent' really together season 7 they were still trying to fix their marriage season 8 he had to leave but then came back Season 3 was my favorite cause everything was good for them then

i agree season 3 was the only "normal" season for them

the season Piper is prego and Leo has to help her and when she had to stay in bed Leo made sure she did because a lady at the hospital told her to.

I personally think season 3, 4 and 5 (Minus Leo leaving at the end of season 5)

All for their own reasons:

Season 1 is the start for them.

Season 2 - Leo will always have Piper heart even in a love triangle.

Season 3 - Having lots of weddings Lol, but finally getting married and winning against everything that comes their way.

Season 4 - Loved them together this season, Piper trying to have a kid with Leo and at the end of the season she finds out she's pregnant.

Season 5 - Wonderful, them finally bringing a son into the world and them being together.

Season 6 - It's what I would like to say the Angst season for them and it was interesting to see this couple so in love go through something like this but as always by the end of the Season they find their way back together.

Season 7 - Beginning was Angst and then it was just a great Season for them.

Season 8 - She lost Leo, one of the things Piper thought would never happened but she stayed strong and knew she would get him back and she got him back at the end and they had a happily ever after and that's why I choose Season 8.

they where so cute when they where old,like grandma and grandpa!!!!!!!!!!!so cute...