TimeCapsule range (distance) ??

hi all,
im considering getting an apple timecasule as my main home router, i live in a double storey 4 bedroom place which is pretty big, currently im using:
http://www.netgear.com/Products/Rou...axNEXTWirelessRoutersandGateways/WNR854T.aspx

and its great! i just like the idea of the 1tb hdd and printer sharing...

i just wanted to know in comparison, what is the effective range of the timecapsule? im looking to replace my current router and sell it, so i won't be keeping both..

i connect up to 4 wireless computers, 2 lan, xbox, ps3 and the rest!

any feedback is greatly appreciated