Need information on semen tanks and want to buy

I am a young farmer who has recently started showing and raising show cattle.  I am looking to purchase a semen tank and do not what size or specifications I should be looking for.  If anybody would happen to have a used one that they think would fit my needs for my small operation that would be great.

If you intend to get in the business and stay, go online, find a tank that will go 4 months between service's and buy it.  It will have 6 canisters, each holding 8 or so canes, so you have 500 plus straws.  If that ain't enough,  business's is way too good.

Go to http://www.sementanks.com/  and order a XC millennium 20/20 tank.  I just ordered one and I did my research.  The company is great to work with.  They also have a "live chat" option to ask questions. Super helpful.