Don't know about the ruggedness of imports. I haven't heard that. You're on the AB thread, so you would know better than me. My only import is a wild B smarigdina. He's tough as nails.
If you change water to keep ammonia below 0.50ppm and use Prime to lock that up, any fish should be able to handle that. I only worry about new keepers without test kits.
Just for fun, here's my one-sentence cycling tutorial:
Change half the water whenever ammonia rises above 0.25ppm or weekly, whichever comes first, dosing Prime @ 2-drops/gal of tank size with changes and 1-drop/gal daily until cycled.