Lantus or Levemir?

I am LADA person who's still honeymooning. I recently switched from Metformin to Lantus because the side effects of the oral meds were killing me.

I started taking Lantus a couple months ago and I noticed I am gaining weight even though I still exercise and eat the same as I was prior to takign insulin.

Should I switch to Levemir? What are the pros and cons of these two basal insulins?

Thanks

here's a discussion on the subject. sorry I don't know anything about either of them. they weren't even on the market when I switched from shots to the pump

https://forum.tudiabetes.org/topics/583967:Topic:99544