Here are the reviews of the harnesses we have had. We have had several other harnesses step-ins and standard harnesses from PetCo, but these are my favorite harnesses:
1. Buddy Belt
I just got my Buddy Belts in the mail, so I do not have too much to say about them.
Positives: Very attractive, made of leather (so it should be durable), buckle enclosure is easy to take on/off
Negatives: stiff when first purchased, sits differently than other harnesses
2. Bessie and Barnie Harness
I ordered these online from Poochieheaven, and I LOVE the look of them. They are absolutely adorable and you can customize the piping and fabric on them for your dog. They have held up amazingly well and still look brand new after over a year.
Positives: Very cute, soft, size can be adjusted around the ribs,
Negatives: Goes around the neck more than I'd like, not easy to take off/on, has to go over the head to be put on.
3. Chattiesmom Step In Harness
I got Couver a step-in harness from Chattiesmom and it was great! I loved how lightweight it was and it was easy to take everywhere. However, he got ahold of it one day and chewed it up... so we no longer have it
Positives: Easy to take on/off, very light, easy to clean, inexpensive
Negatives: Easy for dog to chew (lol Couver ripped his up)
4. Mesh Harness (Wal-Mart)
This was the first harness I ever purchased. They were inexpensive and came in various colors. They are a good fallback harness to have around the house in case you can't find the others

They seem comfy and light, but would be good for escape artist dogs. They have plastic snaps and velcro.
Positives: Very light, easy to clean, inexpensive
Negatives: Not super secure (wouldn't be good for escape artists), not particularly attractive
Overall, I look for security, something that is easy to take on and off, and something that looks nice. I want something that they can wear with and without clothes because they are always wearing something during the winter.