Recommended gigabit pci NIC's and switches

[Taisto Repo]

Can someone recommend a working combination of gigabit PCI nic for  
clients and a gigabit switch between the server and client network?

The clients are working otherwise OK but youtube videos are like  
slide shows... Currently there is a 100 Mbit switch / network cards  
on clients but probably a faster interface would help at least a  
little bit. Is INTEL PRO/1000 GT DESKTOP ADAPTER BLK and	 Dlink  
DGS-1005D/E a better option? They are both quite reasonably priced  
and the network card  should support PXE booting.

However it is not worth of upgrade if there is no speed gain. Has  
anyone got experiences of these?

Thank you in advance.