can someone tell me the difference between the Sterling and Sterling SUB models.

Sorry, I’m sure this has been covered here somewhere but I’ll be dipped if I can find it. I’m looking to buy a less expensive version of my EBMM Axis super sport made in 2000. The guitar I buy will sit on a stand next to my chair for the purpose of grab and practice a tune. Play along with you tube vids and such. Don’t want to keep my gamer out in the living room. So I’m wondering what the difference is between the sterling and the sterling sub models. Which is the better guitar for feel. I probably won’t even plug this guitar in. Just for noodling purposes only. Thanks.