The older "vintage" lenses will not cost a fortune, and give great results. A Rigid Summicron 5cm F2 will run ~$350, a Summarit 5cm F1.5 ~$250 (CLA'd). A Canon 35mm F2.8 with an adapter for use on an M-Mount will run under $200. A 90mm F2 Summicron under $600, a 85mm F2 Nikkor in LTM will run under $300, and a Canon 85mm F2 or F1.9 will run under $200. Lots of options IF you are willing to build up an inventory of used lenses. They are built like tanks, and very little to mechanically go wrong on an RF lens. Try to figure out what your "system" should have for your $3K CDN. Then break down the amount for each component. Off hand, I would go with an M6 in EX+ or better, that had been CLA'd recently. I'd go with a later Summicron 5cm F2 for a normal lens, the 35mm F2.8 Canon, and a Nikkor or Canon short Telephoto. You should have some change back for your $3K.