Im looking to buy new irons but im not very good
Callaway X20's I personally have used many other clubs and these are by far the most forgiving.
Ping G-5's are very forgiving. They are costly but great clubs. And if you like Taylormades like myself, I would try some older Burner irons or a set of RAC OS irons. Both of those you should be able to get for around $200 used.