New case advice needed

[Thewhitepanther]

Hi I'm wanting to get a new case as my current one is not big enough and the temperature is quite high my current case is cooler Master k350 and I have been offered a coolermaster cube case buy someone who will fit it me as I am not very good at this will this case be better airflow wise as my current one is not big enough for my GTX 970 as one of a fan cases cannot be used
So the only option is a new case
The new case is aCooler Master HAF XB EVO would this be a lot better

 

[Lutfij]

as my current one is not big enough for my GTX 970 as one of a fan cases cannot be used

Could you detail what sort of hardware you have setup inside the Coolermaster K350 chassis?
I'd suggest holding off the Coolermaster HAF XB Evo and pick up a Corsair 230T though depending on your innards you could probably downsize to an matx/mitx chassis and yet not see a hit in thermals. The HAF XB is a dated chassis similar to your K350 and thus isn't worth an advice to purchase.

You might also want to include your budget and a site off which you could purchase a new case.