The first EM listed isn't for aluminum. No idea about the second one. Looks like you found an outdated catalog page from a French tool supplier. Note how TiCN is the one highlighted as "recommended".
Here's the real A245 catalog page from Niagara's website in case anyone else is interested (uncoated or TiCN only). We've used the A345 (3 flute) with great success, they're good quality end mills.
http://www.niagaracutter.com/solidca...um_ss/a245.pdf
It's pretty clear you have your mind made up and don't want to listed to what Cory and I are saying. For anyone else following this boondoggle - here's what I would recommend.
Using a router? Buy Onsrud's singe flute cutters (63-600 series) - McMaster under "Router Bits for Aluminum" (ex PN 3317A21, 3317A25).
Using a mill? Check out Maritool (Uncoated, ZrN, DLC) or Lakeshore Carbide (ZrN). McMaster sells the TiCN Niagara tools (High-Performance Carbide End Mills for Aluminum).
http://www.maritool.com/Cutting-Tool...201/index.html
http://www.lakeshorecarbide.com/vari...raluminum.aspx