Either trailer would be fine with your vehicle, but...
You’ll likely need a trailer brake controller and 7 pin connector with the larger one. The smaller trailer likely does not have trailer brakes and a four pin connector for lights is all that is needed. Most, if not all, states do not require trailer brakes under 2000# GVWR and many don’t require them until 3000# GVWR. A Weight distributing hitch would be nice for the larger trailer if it squatted your SUV much, not needed with the smaller one.
I towed a 3877 GVWR TT with a V6 Ford Explorer V6 with tow package. Engine was a little weak on steep or long hills But elsewise fine towing that. I did use a weight distributing hitch.
Smaller length single axle trailers are easier to jackknife when backing. Just expect it and go easy and slow while backing.
I own a small 2000# 4x4x8.5’ cargo trailer & it is real easy to jackknife. My previous 2995# GVWR (on 3500# axle, no brakes) 10x6x6’ cargo trailer was also easy to jackknife.
Just don’t be in a hurry when backing up. Like the Shootist said, “slow is smooth, and smooth is fast”. That also applies when backing a trailer. Take your time and the end result will actually be faster than pulling forward a lot to straighten out, with less frustration.