Would there be any differences to the tone of a Blackstar HT-5 mini halfstack, and a Blackstar HT-5 combo? Would the tubes break easier in either one?

Also, off subject. When ordering from Musicians friend, I'm a bit confused about their shipping. If I ordered something on a Tuesday morning at 6 A.M. they say it will ship same day. Using the most expensive shipping, would my order get here on or before friday?