I do have a very old Lincoln 225 arc welder, that I haven't used in many years. Even in those days my welds looked like a child had thrown mud on the metal!

If I can sell the old arc welder, I would like to buy a MIG welder because I've been told they are much easier to weld with.
Is this true? And, if so, what brand and type of MIG welder is best for the least amout of money?
Any comments or suggestions will be most welcome.