I made one recently with NZ Cascade. Similar to US, but slightly more pronounced bitterness and more stone fruity aroma. Worth a try if you've done US Cascade SMaSH's and want to compare!
Did you have a style in mind? Pilsner and Saaz with a Belgian yeast makes a nice Patersbier/Enkel. I can also vouch for Vienna/Saaz for an easy drinking summer beer, either as a lager or clean ale. Besides EKG maris otter also makes a nice SMaSH with big bold hops - maybe one of the NZ or Australian hops if you're avoiding American.
I'll second MO and EKG, especially if you haven't done any British beers. Or, although it's not a SMaSH, adding a touch of crystal will get you a simple and nice ordinary bitter.
I've used Vienna in a SMaSH and it works well. Maybe add a German hop and do a simple vienna lager.