Prefer flashy (aka, with white) red brindle on pretty much everything that comes in brindle- except Boxers. I prefer fawn boxers with black masks. In whippets though, I like them to be white with brindle patches.
Spaniels and setters I prefer to be white with a few large red patches, red on the head and tail. But dominantly white... Just not too white- almost even amounts of red an white. GSPs I like liver- big patches with even ticking, not much clear white.
I like chocolate labs best. Red/white bicolored JRTs (I greatly dislike tricolred JRTs). Standard Black and Tan yorkies (I know some have blue instead of black, I prefer they don't), red or white Poodles... Deep red Goldens are awesome.
I like mostly black/minimal white BCs (like Fiest), and blue Merle Aussies (like Merlin). I like red ACDs with ticking. I like both Black and Tan and red and tan Dobes, not a huge fan of blue or white ones. And for GSDs, I love pure black GSDs, as well as sable- especially dark sable, I don't like lighter sable.
Corgis... Any color is cool. I do like red and white a lot, though.
Doxies I like red or in Black and Tan. And I've no clue why my iPod keeps putting Black and Tan in upper case.
Hm... I like huskies and malamutes in the standard color (I don't know the right term for it, I'm sorry),
I like Mia colored papillons, but Summer colored ones are cool, too.
Have I forgotten anything? Oh, I love black Staffies, chocolate or red APBTs, and Sako colored AmStaffs (like, Sako's exact shade and markings). Light red and white AmBullies are awesome.