The TT Rudder Rac is a great rig too, a little more MOLLE than the MAV but it wont take a bib either.
If you're looking for something with a bib you'd probably be into a Rhodesian Recon Vest (RRV). The Eagle industries RRV is very good, Pantac and FLYYE make good quality, more moderately priced versions. RRV's are pretty modular, you can get back MOLLE panels and packs that will replace the simple harness if you evre want.
Edit: Also check out the HSGI Neo chest rig it looks super lightweight.
https://vimeo.com/203457245