Short answer — it depends on what you need to fast-charge (phone, laptop, multiple devices, or in-car). My top picks and quick buying guidance for Australia in 2025:

Top picks

• Best all‑round (compact, multi‑device): UGREEN Nexode 100W (4‑port GaN). Great balance of price, size and 100W single‑port power for a laptop plus extra ports for phones/tablets. Widely available in Australia. (Amazon.com.au)
• Best single‑port high‑watt laptop charger: AUKEY Omnia 100W (smallest 100W GaN brick with real 100W+ output). Good if you only need one high‑power USB‑C port. (tomshardware.com)
• Best compact everyday charger: Anker Prime / Nano series (30–67W GaN options). Excellent reliability, very portable for phones and 13–14" laptops. (Anker.com)
• Best extreme/multi‑laptop desktop charger: UGREEN Nexode Desktop (high‑watt models up to 240W single‑port / 500W total) — if you need to charge multiple laptops or very high‑power devices. (Note: big and more expensive.) (theverge.com)
• Best fast wireless / powerbank combo: Ecoflow Rapid Pro system — fastest power‑bank charging and very high output if you need portable, extremely fast top‑ups for multiple laptops/devices. Useful for travel/work without mains access. (theverge.com)

How to choose the right “fast” charger

• Match wattage to device: phones typically need 20–45W for fastest charging, most 13–14" laptops need 45–90W, and 16" MacBook Pro or high‑end Windows laptops may need 100–140W. Use a 100W+ PD 3.1 charger if you have a power‑hungry laptop. (tomshardware.com)
• Prefer USB‑C Power Delivery (PD) 3.0/3.1 and PPS for fastest, safest charging across brands. GaN (gallium nitride) chargers are smaller and more efficient — now standard in the best fast chargers. (Anker.com)
• Cable matters: use good quality USB‑C PD cables rated for the wattage (e.g., 5A/100W or 6A/140W for PD 3.1 high‑watt chargers).
• Multi‑port tradeoff: total wattage is shared — if you need to charge one laptop at full speed and also phones, buy a charger with enough total output (or a dedicated single‑port 100W+ brick for the laptop and a smaller charger for phones). (Amazon.com.au)

Where to buy in Australia

• Major retailers (Amazon Australia, JB Hi‑Fi, Officeworks), and official brand stores (Anker, UGREEN, AUKEY) — check for AU plug versions and local warranty. Price ranges in 2025: roughly A$40–120 for 30–100W GaN wall chargers; A$150+ for high‑power desktop/500W units or power‑bank bundles. (Amazon.com.au)

If you tell me: (a) which devices you want to charge (phone model, laptop model), and (b) whether you prefer lowest price, smallest size, or maximum power, I’ll give a one‑line best model for your exact needs and current Australian links/prices.