Fein Heavy Duty Screwdriver kit

[Crispy]

I am going to have to replace my roof this year with the help of a Chippy/builder, as i dont really like the internal water features my house seems to have every wet season, and the tin tiles are only getting worse.
As i have to help him to do everything to keep the costs down im looking at getting a metal roof sheet driver, preferably cordless.
Its an upstairs house - 5+ish metres to the ground, so i dont want to be dragging an extension cord around.

I could go Hilti but that would run near $1500 ( as i have some 22v platform tools and batteries already).
I could go Makita - but have read way to many varied reviews ( I have this 18v platform also)
Definitely dont want to go 18v Dewalt or milwaukee, and Festool dont seem to do a metal sheet driver ( unless ive miss understood what the DWC 4500 is capable of)

I have found a Fein ASCS Heavy duty screwdriver kit for $380 - only comes with one battery, but even with the cost of a spare battery will only be total ~$500
Has anyone used one, are they any good -both the driver or fein, or are there any other recommendations i should look at.

Cheers

 

[Mini Me]

In my experience and using the correct screws any half decent cordless drill/driver will do the job. The screws have a sealing washer on them and they need to be screwed down so the seal does not deform at all. The screws we use have a hex head and I use a suitable 3/8 socket and the 1/4 hex drive adaptor is available on Amazon or similar.

 

[luvmytoolz]

I've had the Fein and the Hitachi, the Fein is definitely the better tool.

 

[demographic]

I've used a normal cordless with one ot the 8mm socket bits with magnetic retaining...err...magnet for the occasional tek bolt I've had to put in over the years although I did pull a Makita Tek gun out of a skip a few years ago but is corded so despite its depth set nose piece I've never even used it after I fixed the damaged cord.
Theres not much to them and I just use a normal cordless, however if you're hoing to fire loads of Tek bolts in you could get one of these?
Tek gun, by Makita.
I imagine most manufacturers do tek guns but I've not checked.