What cage should i get for my 3 new male gerbils??(link included)?

i am getting 3 male gerbils in a couple of weeks and i want the perfect cage.
http://www.petco.com/product/8295/coast-...
http://www.petco.com/product/8305/coast-...
http://www.petco.com/product/8304/coast-...
http://www.petco.com/product/14897/small...
http://www.petco.com/product/8335/coast-...
http://www.petsmart.com/global/product_d...
http://www.petsmart.com/global/product_d...
Answers:
i like the 5th and 6th ones. they look like fun for ur gerbils. just be aware that wire floors or platformes could hurt ur gerbil's feet. im not positive it would but just be on the safe side. i think the 5th one would be the best. just make sure theres enough room for all of them. also some of the last ones u posted are way to small. good luck with ur gerbils.
addition:
dont get an aquarium as some one suggested. it has horrible air circulation.

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get a 25 gallon aquarium. they are much better. most gerbils spend their whole day chewing through the cage slots. and he will get through eventually. dont get a plastic one. glass aquariums are much better for odor and they can stay warmer. and plus, it keeps the cats or dogs out.

good luck!

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The 6th one down looks perfect. Have fun with your little cuties.

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I personally like the 5th one. It seems to be the most spacious, you need to check when you go buy the cage that the wire will not hurt your gerbils feet, if they say that for whatever the reason it is harmful on gerbils feet, line the ramp with some carpet.
You will need to take out the wheel. Wire wheels can actually amputate the tuft at the end of a gerbils tail. Alternatively you can just cover the rungs with paper or masking tape to make it safe for your gerbils.
This site is all about gerbil cages:
http://www.petwebsite.com/gerbil_caging.
This site is all about gerbil wheels:
http://www.twinsqueaks.com/tips-archive/...

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You need to put Gerbil's in a tank, as they will chew anything that is plastic! Take a look in the trade-it maybe, or I don't know if Pets at Home sells tanks! They can be a little pricey, but at least it will keep them inside! Good luck!