I use a Soundstyle Hifi rack and an apollo mezza soprano AV rack with my G/500 series combination. Both looks good and are well made. The Apollo rack is supporting an 80kg tv on the top shelf and a Meridian 558.2 AND 559 on the bottom. The glass hasn't shattered yet.

G98, HD621, 568.25, 558.2, 559, B&W 803Ds, HTM2D, 4xSCM1, ASW850, Pioneer PDLX5090 50" Plasma, Cables by Atlas and Chord