@XJinBC Props to you for using the Mamiya. Those are great cameras. I had a RB67 in the past.
I shoot both professionally and for fun - mostly "New Topographics" stuff - which is basically a mix of natural and man-made landscapes. A lot of my work consists of big panoramas on medium format film (see:
https://www.flickr.com/photos/brickartisan/) which calls for big cameras (but I like it that way, there's something very satisfying about working a massive magnesium-alloy camera from 30 years ago and getting it to do what you want)!
Current kit is a Linhof Technika V (bought for a measly $90, repaired it myself), Sinar Zoom back for panoramas, Lisco holders for 4x5, Nikon 75mm f/4.5, Schneider 135mm f/4.7, Schneider 47mm f/5.6. I'll usually throw in my Rolleiflex too. When going for hikes, I'll take the Linhof and 2 lenses, or the Rolleiflex + digital if I'm traveling light.
Loading film for the Linhof V. Those hardcases are great, by the way. You can find them on sale at Sam's Club, Costco, and Horror Freight.
Recently, I converted my digital to shoot in infrared. Landscapes are gorgeous, just surreal! I'd encourage anyone with a spare digital body and $200 to give it a shot (you can always shoot in "normal" colour if you put a hot-mirror filter on the converted camera).