That's a beautiful pair of Scotts! I like the round tuning dial on the 355. My Scott 399 has those round dials, and it looks beautiful at night.
I'm using my Scott 296 with Snell Type CV (living room), and Klipsch RF-7II (basement). Following is a summary of my systems.
Living room: Stereo speakers are Snell Type CV. Subwoofer: Klipsch P-312W. The source components are Oppo BDP-95, and Dual 1249 with Stanton 681EE. Amps include a pair of McIntosh MC30s, Scott 296, McIntosh MX110Z / McIntosh MC275, a pair of Pilot HF-56 mono receivers, an NAD pre-amp and Acurus A250 power-amp for movies, and a McIntosh 2155 driving JBL L830s in the kitchen / dining room. A patch panel (banana plugs) allows me to connect the speakers to whichever amp I want, and a Niles AXP-1 RCA selector switch connects the Oppo to the amp. Chromecast Audio for internet radio and Spotify Premium.
TV room: Stereo speakers are Klipsch Palladium P-37F. Subwoofer: Klipsch P-312W. The source is an Oppo BDP-105. The amps are Scott 399, McIntosh MC225, Kenwood KR-9050, Fisher 800B, Fisher X-1000, Scott 299C, McIntosh MC240, and an NAD C375BEE. The tube amps are for music. The solid-state amps are for movies. A patch panel (banana plugs) allows me to connect the speakers to whichever amp I want, and Niles AXP-1 RCA selector switches connect the Oppo to the amp. Chromecast Audio for internet radio and Spotify Premium.
Basement: Front, center, and left speakers are Klipsch RF-7 II. A single rear speaker is a Klipsch RF-7. Subwoofers: SVS SB16-Ultra, Klipsch R-115SW. Source: Oppo UDP-205. Amps: Scott 272, Inspire “Fire Bottle” SE Stereo Tube Amplifier HO, Scott 222C, McIntosh MX110Z tuner/preamp, Fisher KX-200, Scott 296, Pilot SA-260, Scott LK150. A patch panel allows me to connect the speakers to whichever amp I want, and F/F RCA cables enable me to connect an amp to the Oppo, and a power amp to the MX110Z. Chromecast Audio for internet radio and Spotify Premium.
Office: Stereo speakers are JBL L880. Sources: Oppo DV-980H SACD/CD/DVD, and my Windows 10 laptop with Music Streamer II DAC. Amps: Fisher 500C, Scott 299B, Altec 353A, and an NAD D 3020 for general internet use (and summertime). Banana jacks allow me to connect the speakers to whichever amp I want, and a Niles AXP-1 RCA selector switch connects the Oppo to the amp.
Bedroom: The speaker is a single Klipsch WF-35. Source is an older CD player. Fisher TA 500 (AM/FM mono receiver). Chromecast Audio for internet radio and Spotify Premium.