Mine is actually a 110v - sometimes they have different specs to 240v in terms of torque available etc. might be worth comparing if you have a transformer.
I just read the reviews on Screwfix and the Sparky did not come out well. Surprised as mine has been fine. I once drilled a 4" hole and plumber did one similar in the same wall - he used a Makita and he did manage to go through the wall a fair bit quicker than I did. Depends how often you think you will be using it, I suppose, to determine how much you want to spend.
Was gonna recommend a Hilti but having used one on a site recently thought it a bit underpowered on a small core. It also went mad hot.
Two of us up a ladder swinging on it and getting no where.
Rems are German. Nuff said.
Just brought a Makita. One setting seems pretty good. It replaces another Makita that had too many different settings, but still a good drill. Had a milkwalki that nearly broke my rist, I hope the bugger who stole it had a nice 4 inch hole to drill on a ladder.