I love making sushi at home - it is a satisfying and delicious experience that is very quick and easy (and I can use whatever food is leftover in the house).  However, I'm limited by the type of rice I have been using, and most of the sources I've found are confusing about details and brands. I have been using Botan Calrose Rice, and I've used the Whole Foods brand sushi rice, but neither is particularly good.  So, what are the specific considerations for good sushi rice? Obviously it should be a white, short-grained rice, but what else should I look for? Is it worth it to order rice online when you live in a place that only sells the Botan rice?  Edit: The method for making the rice is either by boiling in a pot with a tight lid or using a rice cooker - both seem to produce very similar results for me. I am looking for a rice with more consistent texture and with a stronger, less chalky flavor.  
"Obviously it should be a white, short-grained rice" This is your problem, you should be using medium grain not short grain, short grain is pudding rice and will loe pretty much all its structure when cooked.  As for brands there are things like Yutaka though they're pretty expensive as their aimed at the western speciality market rather than the regular Japanese one. If you want to find it at a good price you're best off looking online at the brands the Japanese supermarkets sell, though you'll probably have to buy a large bag (5kg+). 