If you're picking out a baby, you'll want a small tub. 15 quarts is perfect and provides ample room.

If you go to Target they have Sterilite ClearView tubs that are very clear. I don't know if you have those up there, but if you have a container store or similar, try to find Iris tubs, they are nice. Try to find something that is around 15quarts. You want something fairly long, and wide, but not too tall. 6-6.5" tall is perfect, and won't be hard to heat. A taller tub requires more energy to heat the air.

If you want to switch to a tank later on, I'm sure it'd be fine, but you'll likely fall in love with the plastic housing as it makes keeping up husbandry SO much easier. Plus, they are very inexpensive to buy if you ever need to upgrade. Tanks, being made of glass, are very hard to heat as the glass will always try to be the temperature of the room. You lose a vast amount of heat if it's not properly insulated. It's also very hard to get them humidified unless you modify the screen top.

I would invest in an Animal Plastics/Boaphile/Herp Enclosures plastic enclosure that is specifically made for reptiles. They may cost a bit more, but they will look very professional, and are built to last. Tanks.. if you drop it or set it down too hard once, there it goes. Tubs you can throw down the stairs, haha