Best lightsabers?

Dooku's hilt is pretty cool. Savage's hilt is designed off of Dooku's making it more badass than Maul's

Also Pre Vizsla's Dark Saber is pretty badass; I mean listen to the sound it makes.

Also Krell's Sabers and the noise it makes; Yum

Sidious's sabers are like gold encrusted; so elaborate

Functionality: Kun's saberstaff.
Design: Sidious' electrum hilt.

I believe any confirmed saber to have the dual-phase capability has a leg-up on "normal" sabers. Vader's and Kun's come to mind.

Kun's and Sidious' are quite remarkable in terms of design, IMO. I also liked the design of Luke/Obi-Wan's lightsabers, though they are more standard (of course). I suppose I've liked all curved-hilt lightsabers, just owing to the fact that I generally liked the characters who owned such weapons - Baras is a notable example because I like the way his hilt has a rancor tooth integrated into it.

No mention of Corran Horn's? Can stab out like a lance to a really long length.