Since we're all suggesting lists, I guess I'll suggest mine.
Under 4-5K Canadian (Including dual monitors), my current desktop has 32GB I don't want to go any lower than that. I use my computer for video editing, photo editing, and gaming. I want the option to be able to stream but not a lot.
Even when I'm running one android emulator I get erratic frame rate drops in games like League of Legends for example goes from 60FPS -> 12 ->30 -> 60. and my current one runs at 32GB of ram with I7 6700K.
Here's something for around your budget, and leaves you room to 64GB if you really need it. But I doubt that, and I think it was the 6700K's 4 cores and 8 threads which was at fault for the frame drops.
Canadian prices eh? Ok.
PCpartpicker List
Built off of this list, but made a few changes (and made it way more expensive), so if you want to get about the same performance for a lower price, then get Archaic's list. If you want to spend your whole budget, this may be better.
First off, I replaced the motherboard with a lower priced elite, which has a similar VRM but less debug features. Should still be fine for a 3800X though. I replaced the ram with B die 3600Mhz memory, in case you ever want to tweak that. But even if you don't, the tighter timings should serve you well. PCIe 3.0 drive instead of 4.0, but if you do need it, you can have it and still be within budget. RTX 2080 Ti, but if you want to be more oriented to price to performance, you should 2080 Super. I included the two monitors too. The H150i is really just there if you want to do some overclocking, which is also why I added a 3800X, as it is binned higher than a 3700X. If you don't think you'll every overclock, a 3700X with an NH-U12S or BeQuiet Dark Rock 4 should be fine, or if you don't mind noise you can just run with the stock cooler.
PCPartPicker Part List:
https://ca.pcpartpicker.com/list/RWxx27
CPU: AMD Ryzen 7 3800X 3.9 GHz 8-Core Processor ($493.25 @ shopRBC)
CPU Cooler: Corsair H150i PRO 47.3 CFM Liquid CPU Cooler ($199.99 @ Amazon Canada)
Motherboard: Gigabyte X570 AORUS ELITE WIFI ATX AM4 Motherboard ($282.00 @ Vuugo)
Memory: G.Skill Trident Z Neo 32 GB (2 x 16 GB) DDR4-3600 Memory ($409.00 @ Newegg Canada)
Storage: HP EX920 1 TB M.2-2280 NVME Solid State Drive ($157.50 @ Vuugo)
Video Card: EVGA GeForce RTX 2080 Ti 11 GB FTW3 ULTRA GAMING Video Card ($1809.99 @ Memory Express)
Case: Phanteks Eclipse P400A ATX Mid Tower Case ($109.99 @ Canada Computers)
Power Supply: Corsair RMx (2018) 750 W 80+ Gold Certified Fully Modular ATX Power Supply ($139.99 @ Amazon Canada)
Monitor: Acer VG271U Pbmiipx 27.0" 2560x1440 144 Hz Monitor ($509.36 @ Amazon Canada)
Monitor: Acer VG271U Pbmiipx 27.0" 2560x1440 144 Hz Monitor ($509.36 @ Amazon Canada)
Total: $4620.43
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2020-01-17 18:36 EST-0500