I think that with a Syrian you do need a big cage because they grow quite large. Our Syrian has had three cages since we got her and is now in Hamster Heaven which she loves.
I bought the Savic Peggy for one of our Russians the other day but wasn't impressed at all because there is no door on the side of the cage - only one at the top and if you put a Penthouse extension on which I wanted to do then you have to remove it everytime you want to feed or play with them which is very annoying.

I think the Savic Peggy is better for an hamster like a Robbo or Chinese that you don't get out a lot.