Portable / Countertop Oven That Bakes Like a Home Oven ?

Another vote for a powerful convection/microwave. I've enjoyed this model for almost 30 years and am only on my 2nd unit. It bakes nicely and can roast a nice sized piece of meat:

http://www.sharpusa.com/ForHome/HomeAppliances/Microwaves/Models/R930CS.aspx

Here's a link to a convection oven conversion calculator that can simplify the learning curve :

http://convection-calculator.com/