Short answer — pick by need:

• If you want one all-purpose power bank (phones + occasional laptop): Anker 737 Power Bank (PowerCore 24K) — 24,000 mAh, up to 140W output across multiple ports, digital display, fast two‑way charging. Great balance of capacity, speed and portability for travel and work. (anker.com)

• If you need the fastest/heaviest-duty portable for laptops and multiple devices: SHARGE / Shargeek 170 (24,000 mAh) — up to ~140W per USB‑C port and ~170W total, USB‑PD 3.1 support and very fast recharge. Excellent if you need to charge a MacBook Pro or two devices at once. (androidcentral.com)

• If you want laptop-class power plus built‑in cables for travel convenience: Anker Laptop Power Bank (25,000 mAh, 100–165W variants) — built-in USB‑C cables, 100W+ outputs suitable for modern laptops and fast recharging. Good for frequent flyers and digital nomads. (anker.com)

• Best magnetic (MagSafe / Qi2) option for iPhone owners: Anker MagGo 10,000 mAh (Qi2 / MagSafe compatible) — attaches magnetically, supports up to ~15W wireless (Qi2) and ~30W wired; very convenient for iPhone 12+ users. (anker.com)

• Best budget / pocket pick: Belkin BoostCharge (10K–20K) or other 10,000 mAh banks — compact, inexpensive, good for a couple of full phone charges; fewer fast‑charging bells and whistles but solid value. (wired.com)

• If you need a rugged / outdoor multi‑day option: look at larger-capacity outdoor-focused packs (BioLite Charge 100 Max, and small portable power stations for camping). These give big capacity, multiple ports and some include wireless pads—choose if you need many charges off-grid. (brandvm.com)

Quick buying tips (important):

• Check watt-hours (Wh) as well as mAh. Airlines generally limit spare lithium‑ion batteries to 100 Wh (carry‑on only) without airline approval; 101–160 Wh needs approval. If you travel by air, avoid >100 Wh unless you know the airline rules. (tsa.gov)
• For laptops: look for USB‑C PD 3.1 / PD 3.0 and single‑port wattage ≥ the laptop’s charger (most Ultrabooks need 45–100W; 16" MacBook Pros often benefit from 100W+). (anker.com)
• For iPhones: magnetic (Qi2 / MagSafe) 10K banks are convenient but usually heavier; wired USB‑C at 20–30W will charge faster and generate less heat. (anker.com)
• Port count vs. speed: multiple ports let you charge several devices but reduce per‑port max wattage when used simultaneously. Check the total-output spec. (anker.com)

If you tell me the devices you carry (phone model, laptop model, whether you fly), I can recommend the single best model and a place to buy it — or, based on the picks above, I can list current deals and prices.