shielded cables & IC's or not?

Shielded speaker cables are a bad idea IMO. Shielding only adds unneccesary capacitance. With the low output impedance of power amps, there is really not much concern of RFI being picked-up.

As for IC's, this is system and location dependent. The great majority of my customers have found that unsheilded IC's work great for them. As long as the IC's are not put directly in contact with power cords etc., there should not be a noise problem.

Unshielded, solid core, small guage.

What cables fit this criteria and which models?

Empirical Audio Holophonics
Kimber PBJ and silver version
Acoustic Zen Reference
Luminous Audio Synchestra
Mapleshade Clearview
Homegrown Audio Silver Lace
Nordost Valhalla

Audioengr you forgot some, but that is OK....My suggestion is to go unshielded and take them to the Fuddruckers off Broadway in the alley and put them in the bottom of a bucket of beer until you finish up the longnecks to treat them cryogenically and once a year soak the silver connectors in the river walk to take off the tarnish and eat some proper cheese cake at the same time.....If the tarnish really gets bad go to Millers Bar-B-Q and use some of their sauce.....With Levinson I would go with Luminous Synchestra Signature ICs and shy away from silver.....