I will get this one started. While not sure I would call all of theses favorites they are ones I have and they have required to special to grow and preform well here.

Beautiful Edging
El Desperado
South Seas
Purple Maze
Fancy Face
Bali Watercolor
Hold Your Horses
Ruby Spider
Twist And Shout
Indian Giver
Westbound Harvest Moon.

I am not sure if I am 5b or 6a. I think they changed my zone to warmer a few years back so I may have to post on both. Here is a list of some plants, including evergreens that do extremely well in this zone. I am purposely not listing dormants because almost all of them do well in this zone.

Autumn Jewels
Avante Garde
American Revolution
Baracuda Bay
Best of Friends (ev)
Black Plush (ev)
Buddy's Betsy
Caesar's Head
Country Pride (ev)
Critic's Choice (ev)
Curly Cinnamon Windmill
Darla Anita
David Kirchoff
Destined to See (ev)
Ed Brown
Fascination Street
Free Wheelin
Get Jiggy
Golden Tear Drops (ev)
Gram's Dream
How Beautiful Heaven Must Be (ev)
Indian Giver
Jan's Twister (ev)
Japanese Brocade (ev)
Jacki Kropf
Leroy (ev)
Lady Neva
Laughing Clown (ev)
Larger Than Life
Lavender Reflections
Lily Munster
Linda Daniel (ev)
Linda Beck
Larry's Obsession
Lexington Avenue (ev)
Mask of Eternity
Mildred Mitchell (ev)
Mokan Butterfly
Moonlight Orchid
Navajo Princess
New Perspective
Palace Garden Beauty (ev)
Prairie Blue Eyes (ev)
Puccini (ev)
President Ronald Reagan
Prickled Petals (ev)
Royal Heiress (ev)
Sexy Sally
Skinwalker
So Lovely
Spacecoast Cranberry Kid
Spacecoast Starburst (ev)
Strawberry Candy
Thais (ev)
Two Part Harmony (ev)
Velvet Eyes
Wisest of Wizards
Wind Frills (ev)
Xia Xiang

Ones that always bloom great for me.

Mighty Chestnut
Chicago Apache
Moonlit Masquerade
Canadian Border Patrol
Illini Jackpot
Hot Wire
Mango Time
Matthew Martin
Awakening Dream
Magic Carpet Ride
Strutters Ball
Orange Tremor
Night Beacon
Laura Harwood
Baja
Carnival In Mexico
Firestorm
Hot Embers
Mary's Gold
Frosted Lime
Heal Thy Spirit

Just a few off the top of my head that I never have trouble with here...
Big Rex
Crimson Pirate
Woodside Romance
Royal Viking
Just Plum Happy
Prairie Blue Eyes

Mildred Mitchell
Always Regal
Always Afternoon
Hamlet
Pandora's Box
What Nerve
Juanita's Picotee Delight

These are some that did well for me that I no longer have for other reasons.

Wild Mustang
Creature Of The Night
Prairie Blue Eyes
James Marsh
Barbara Mitchell
Crimson Pirate
Chicago Apache