Eye Thermage vs. blepharoplasty: at what point is skin tightening not enough?

I’ve been looking into eye Thermage/RF tightening as a non-surgical option, but I’m wondering at what point treatments like this simply aren’t enough and blepharoplasty becomes the more appropriate option.

For anyone who has tried Thermage/RF or had a blepharoplasty, I’d love to hear how noticeable your results were and how long they lasted. I’m also curious whether anyone started with non-surgical treatments and eventually decided to have surgery, and whether you feel you started treatment at the right time.

I’m not looking for a dramatic change, so I’d really appreciate hearing about other people’s experiences, particularly anyone who was in their 30s when they made the decision.