Is a conical burr grinder better than a blade grinder?

Yes, for most brewing. Conical burrs crush beans to a more consistent size, so extraction is more even. Blade grinders chop unevenly and leave fine dust that can make coffee bitter.

What brewing methods does it suit?

The adjustable grind settings cover medium grinds for drip and pour-over and coarser grinds for French press. Espresso needs very fine, tightly controlled adjustment, which this grinder is not designed around.

How much counter space does it need?

It is 4.4 inches deep and 14.1 inches tall, so it needs little width but a fair amount of height clearance under cabinets. It weighs about 4.35 lb.

Burr grinders need the burr chamber brushed out regularly to keep stale grounds from building up. Expect to remove the hopper and brush the burrs every week or two with normal use.

Shoppers who want espresso-level dialing, many grind steps or a large hopper should look at a more adjustable burr grinder. This one is aimed at filter coffee drinkers who want simple, consistent grounds.