Can changing rear shocks of my bike will increase the comfort?

I have a Honda CG125 Titan (5 gear) model bike, i love everything about it except for the comfort. I bought it second hand and increased the cushion of the seat. It feels slightly better now. I'm thinking of changing its rear shocks in to GAS Charged or better shocks from some indian motorcycle brand. Will this help to increase the comfort or it will do a little difference? Can someone experienced in this help me? Thanks am million!

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