Rrecommended Soldering Iron

[ZeusMC]

I have 6 of Kevins books but I can't see any mention of spec of soldering iron, size of tips or type/s of solder to use, tools to get? In Morgan Jones, Building Valve Amps, he mentions a thermostatically temperature controlled iron, typically 50 W as opposed to 12-25 W. He says best tip is conical with an oblique cut across the end to, produce an elliptical soldering surface. Width for a general tip he says 2.4mm, says need a range of tips.

He mentions the Weller " Magnastat"  which has a magnetic thermostat, these irons have tips that are available in different temperatures.

He also mentions earth bus-bars and the need for a more heavy duty iron to deal with these, he mentions the Weller 200 W iron.
Any advice much appreciated

Have been studying Physics books from the local library, prior to working with Kevins books.

Thanks,
Peter.