I am glad that you agree with me, but, no, like Gracodana, other people may have different opinions. It is beneficial to view things from many different angles or perspectives and not to be dogmatic.
But yet again you didn't understand my question. I'll try one more time: Has SSD technology improved dramatically since I last purchased my SSD 3 years go? Is there is a huge improvement in performance that I should purchase an additional SSD instead of the cheaper HDD?
I find it odd that my original question is that difficult to understand. I'll quote my self and bold the key phrase:
"I have a Crucial M4 128 GB from 3 years ago and thought perhaps today SSD has dramatically improved and should get another SSD because both HDD and SDD is much cheaper now. It's really a luxury since SSD does little to none in improving gaming performance."