This is purely a basic list containing as many suitable cages for Syrian Hamsters that I can find - at least that are on the market today.
Of course, I've not used all of them (I'm a Savic fan myself) so I cannot guarantee that they are all high quality etc, only that they are suitable, in the sense of size/footprint, for Syrian Hamsters.
This is the Savic Hamster Heaven, a personal favorite of mine -
I'll include a link for each cage to somewhere that sells it (be sure to shop around though, you may find it cheaper elsewhere) as well as the dimensions of the cage and will be asking people who have these cages to do reviews for Hamsters Galore in the near future. If I have missed a cage off this list, don't hesitate to post a comment with the name of the cage.
Cages suitable for Syrian Hamsters
Alexander - 101 x 52.5 x 51 cm - Alexander at ZooPlus
Igor Fuchsia - 82 x 51 x 36 cm - Igor Fushsia at ZooPlus
Barney - 82 x 51 x 40 cm - Barney at ZooPlus
Falco - 80 x 45 x 70 cm - Falco (larger size also available)
Fabio - 75 cm x 46 cm x 75 cm - Fabio at ZooPlus (very tall, hammocks, additional shelves needed to break falls)
Savic Sky Metro - 80 x 50 x 37 cm - Sky Metro at ECF (same as Hamster Heaven but without pink shelf and penthouse)
Igor - 100 x 54 x 38 cm - Igor at ECF (two smaller sizes also available at ECF, both suitable)
Kevin - 82 x 51 x 36 cm - Kevin at ECF
Savic Mickey XL - 80 x 50 x 32 cm - Mickey XL at ECF (shelf needs covering or removing as wired shelves can damage feet)
Savic Hamster Heaven - 80 x 50 x 50 cm - Hamster Heaven at ECF (height measurement includes penthouse)
Savic Ruffy 2 - 80 x 50 x 38 cm - Ruffy 2 at ECF (marketed as a rat cage, it's too small for rats but great for hamsters)
Simba Rif Multi - 82 x 51 x 40 cm - Simba Rif at ECF
Hagan ZooZone 2 - 100 x 51 x 37 cm - ZooZone 2 at Equipetable (lid needs meshing to prevent escapes)
Imac Rat 80 - 80 x 48.5 x 37.5 cm - Imac Rat 80 at Animal Source (marketed as a rat cage, too small for rats but great for hamsters)
Ferplast Criceti 15 - 78 x 48 x 39 cm - Criceti 15 at Pet Planet
Ferplast Mary - 80 x 50 x 37.5 cm - Mary at Just Cages (another rat cage only suitable for Syrian hamsters)
Ferplast Maxi Duna - 99 x 51 x 37 cm - Maxi Duna at Gardens and Homes Direct (marketed as a a rabbit cage, too small for rabbits but great for hamsters)
Bin cages are cheaper alternatives that are made from plastic storage boxes with holes drilled in them and meshed ventilation panels added. I'll be doing a post on bin cages soon.
The more expensive homemade cages are usually IKEA hacks, such as this IKEA Expidit Hamster Home.