Bosch 4.5kg 36v sds is the best drill I have ever used, excellent drill chews through bricks on chisel mode.
Then the new dewalt 18v xr sds with chisel function is great it's a lightweight sds drill with chisel for light chisel use.
Also the bosch 36v compact sds is a good choice if you don't need chisel at all.
The makita 18v sds is good but is spoilt by its shape and poor balance it doesn't stand upright and only 1 year warranty.
Out of all four drills the new dewalt is my favourite, as it's lightweight, lithium ion batteries, has chisel function if I need to do some light chasing in, and has the best balance and shape.
Then the new dewalt 18v xr sds with chisel function is great it's a lightweight sds drill with chisel for light chisel use.
Also the bosch 36v compact sds is a good choice if you don't need chisel at all.
The makita 18v sds is good but is spoilt by its shape and poor balance it doesn't stand upright and only 1 year warranty.
Out of all four drills the new dewalt is my favourite, as it's lightweight, lithium ion batteries, has chisel function if I need to do some light chasing in, and has the best balance and shape.