Over the reference ...
True, it happened to me, to confuse PSB 18LI2 (with percution) and PSR 18LI2 (without percution) ... so caution.
On the hardware itself ...
It's simple, I do not use this tool. You gain in speed is incredible.
And when it comes to drill in concrete, with good forest (ie not the BOSCH made in China which is a shame), it's almost too easy ...
With this drill limit it fits like butter and yet it's wireless.
About me, it is one of those purchases that you will never regret having taken the plunge. The more you use, the more you're glad I bought it.