NVMe drive: ADATA SX8200 or HP EX950 (ideally on better sale)
(unless you're a student in which case WD all the things)
Since we're targeting the high end but still want reasonable, we probably want a nice TLC drive, and can afford to drop a some money on a good controller—especially since we're looking at a relatively high capacity boot drive. So, for now, we'll keep ourselves restricted to SMI SM2262/SM2262EN, Samsung, and WD based drives. If you want a Phison E12 controller would probably do just fine, but hey, we've got a little budget. Basically, we're targeting the high end of the midrange value/performance desktop options.
At this point, it's largely just a value contest based on who's on a slightly better sale so we can extract the best value. The following is arranged in an order of generally increasing performance/price:
- Mushkin Pilot-E: Previously as low as $130, but currently at $150. Slower sibling the Pilot doesn't seem to be on sale anymore, and is thus not recommended.
- ADATA SX8200 Pro/S11 Pro: Has previously gone as low as $105, but is currently at $150. Slower sibling the SX8200 non-Pro/S11 (SMI SM2262) hasn't seen too many great sales.
- HP EX950: Was at around $125 throughout December, but is now back up to $140. It's slightly slower brethren, the EX900 and EX920, have seen some sales if you want to step down a tier or two.
- Kingston KC2000: Has never been price competitive. Not recommending.
- Intel 760p: Hasn't seen much in the way of sales. Was briefly at $160 but is currently at $200. Not recommending.
- WD SN750: Was down at $130 between December and January, but is back up to its normal price of $150. However, Western Digital does offer a 15% student discount, which, if you're eligible, makes it extremely price competitive.
- Samsung 970 EVO: Currently sitting at $170. Has seen (rarely) as low as $135, but not super great value at this price point.
2.5" SATA drive: WD Blue, Team T-Force Vulcan, or Samsung 860 EVO (ideally on better sale)
Since you said you want to install OSs to this drive, not just use it as storage, we'll forego a more budget-oriented setup with the fast NVMe drive as a cache and this as more mass-storage in favor of a faster SSD. This time, we'll be looking at the Marvell 88SS1074, SMI SM2258/SM2259, and Samsung.
- SanDisk Ultra 3D: Has previously hit $100, currently at pretty stable at $110.
- WD Blue: Has previously hit $80, currently $110. Again, student discount could make the difference here.
- Crucial MX500: $105 right now, has seen as low as $90.
- Lexar NS200: Previously hit $80 with Google Express coupon, but otherwise, has maintained its price of $100.
- Team T-Force Vulcan: Previously hit $85, currently at $110.
- Intel 545s: 1TB version no longer readily available, not recommending.
- Kingston KC600: No longer readily available, not recommending.
- Samsung 860 EVO: Has previously hit $100, but is currently at $150.