wintu said:
(For future reference, wintu is referring to the 26618 Bosch 18V Lithium-ion Impact Drill/Driver shown below)
I don't have this Bosch, so can't give you any real-world experience with it. Like most people, I have a dedicated impact driver, which is the 12V 3.5Ah Panasonic EY7202 with digital clutch, and I am very pleased with it.
Panasonic have had a combined machine in their product line for some time. The 15.6V NiMH version is the
EY6535 but it only has one non-impact speed (0-650rpm) compared to two with the Bosch, and has a lower impact torque (1128 in-lb). On the other and, it comes with a keyless chuck for non-impact work, and a 1/2" square drive and 1/4" hex chuck for normal and impact work.
Panasonic are phasing out their NiMH line in favour of LiIon cordless tools, and the newer 14.4V LiIon model is the
EY7542, which is much more comparable to the Bosch. It has two non-impact speeds (0-700 and 0-2350rpm), and an impact torque of 1239 in-lb.
The EY7542
manual and the Bosch
manual are both available online for comparing the two models. There's also a
comparison page for the NiMH and LiIon Panasonic models.
Panasonic's range of cordless power tools is very highly regarded, but like Festool, many people have never heard of them. They have a much lower market profile than Bosch, DeWalt, Makita etc.
Protool, Festool's sister company, also makes a combined LiIon impact/non-impact driver - the 14.4V IDC and the 18V IWC models. See my
post of September 2009 for photos and details, where you'll see that the IWC has a much higher impact torque rating (2655 in lb) than the Bosch (1500 in lb). However this is just for pure interest as far as you're concerned, as I'm afraid that Protool is not available in the USA.
Forrest