There is no such a thing as "good beginner saddle". It's either good or not. If you are tight on money look into used one but a good brand (MT, Stubben, Collegiate, Pessoa, etc.). Cheap new one will be waste of money, and most likely not a good fit for your horse.
BTW, horse fit is very important, so make sure it fits him!
"Life isn't about waiting for the storm to pass: it's about learning to dance in the rain..."
"When we are no longer able to change a situation - we are challenged to change ourselves."
"How people treat you is their karma; how you react is yours."