There are many different ovens available in market but we always go with convection ovens because they provide even heating on all sides so your baking turns out perfect with evenly browned crusts every time It's also much better at baking cookies faster since air circulates around hotter items helping baked goods come out fluffy rather than crusty On top ovens have hot air blow from above them as well as around them allowing your baked goods get even browned on top whereas bottom ovens use hot air from below them so your baked goods get evenly baked on all sides You can always compare features of different brands before making final choice but one thing is sure that whatever brand you buy they always give you great value for money so just try any oven at home because it doesn't take long time at all just read user manual properly understand how ovens work Then bake anything from breads muffins cakes cookies pies pizza etc without any problem Enjoy Your Baking!! :) . . . . . . . .