OP wrote:
"I guess its time to but a new iMac. Figured I would get the cheapest 2015 21.5 which lists for $1,099.00."
A word of warning, disregard at your own risk:
Do not buy ANY iMac that has only a 1tb platter-based hard drive in it.
If you do, you are going to be SEVERELY DISAPPOINTED by the computer's overall speed.
That is to say, it's going to be "as slow as molasses".
You need either a fusion drive or an SSD.
Workaround:
You can buy a USB3 external SSD and plug it into the HDD iMac, and that will greatly increase its speed.
But you'll have to get used to having "an external booter", and you'll have to set it up carefully so that the SSD will continue to run at its best.
But again:
If you buy any iMac that has only an HDD in it, you're going to be dissatisfied by the speed.