G Scale is my favorite. The old Aristo Craft was great! They offered many America RR items and where dependable runners. Their sets were bargains for kid running with the PWC (slow start and slow stop) Controllers. The track was great once assembled (screwed together). LGB was a bit better in details and quality, cost more, but their slip together track was / is prone to poor continuity. I had a 15' x 35' outdoor layout. But the weeds killed that. The G Scale looks beautiful running in the sunlight.
Aristo Craft was the backbone of the YORK Garden Show. It had an acre of floor space with wall to wall club setups and how to clinics. I still look forward that show ( late March) and then realize it's gone!