Please Help Me Decide What To Do!

[Dindypig]

http://www.candcguineapigcages.co.uk/
they have 3x2 and a 1x2 loft with ramp.
All the GPM piggies are in variations of this setup.

 

[BossHogg]

I've also used the oil filled radiator for years in my shed with no problems.

 

[Maisy and Poppy]

I am having trouble deciding whether to buy the pets@home rose cottage or 2 x 6 c and c with lid and 1 x 2 loft for 2 piggies in a heated garage.