I have not seen any signs that the TekPower is anything more than a decent quality knockoff of the Hakko 936. I have yet to find any good teardowns sitting the insides, in particular showing the chips used and the iron taken apart.
Weller is no longer the tops in quality. Unfortunately, they are a part of Cooper Tools now and since the time they were taken over the quality has pretty much **** the bed. Really really unfortunate but I cant recommend them anymore.
Brands I DO recommend:
- Hakko (only buy from authorized retailers because around 95% of the FX888D on eBay are fake)
- Ersa, which are more easily found in Europe than Hakko. Quality ranges from Hakko level to JBC level
- Metcal/Oki - uses RF heating to power the iron. Curie point of the metal in the tip determines the set temp.
- Thermtronics which was founded by ex-metcal engineers when Metcals patents ran out.
- JBC - truly some of the best, most well designed, irons in the game but cost a pretty penny
- Pace - they used to be excellent, not sure if they still are.
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