Without knowing your reasons for not wanting the grass it's difficult to suggest but generally I would be loath to resort to killing grass to replace with concrete.
As stated below the imprinted concrete will give a nicer finish but there is a maintenance cost to this also as you need to maintain it so it keeps its finish. I have grass, imprinted concrete, stones, slabs and wooden decking at various parts around my front/back garden (sounds like a patchwork quilt) and I would rate as follows:
Covering Appeal Maintenance
Grass 1 Cutting + annual fertilising
Imprinted Concrete 5 Annual maintenance is costly
Wooden Decking 3 Annual cleaning and clear staining
Stones 2 Low cost, low maintenance once
finished
Slabs 4 Twice Yearly power spray
If you are sick of mowing the grass you should hire someone to do it for you, rates should be competitive right now and you still benefit from the visual aspect of it. Gardens are one of the features that 'sell a house' so don't rush into killing the grass.
I want to kill the grass and concrete the front garden.. no kids involved so playing is not an issue... I am just sick of the bloody grass...
ideas, Pros /cons... plz..
Thanks...