Haven't sold anything yet, but most of the responses I've read on ebay community regarding ebay's Managed Payments was negative.

damn I stopped selling stuff on ebay a decade ago just from sheer retarded fraudulent buyer cases.

Have not, and was unaware of MP. Aware me?

Did well selling antique traps a while back. Haven't bought anything off ebay for ages because the prices are insane from what I have seen lately.

Managed Payments is nice in my opinion. Haven't had a problem with it, only downside is it takes a couple of days for money to hit your account. Not so bad unless you're moving a lot of inventory and need that money fast.

I sold some stuff a few months back and was somehow enrolled in automatic monthly billing. That place is such a hassle as a seller it has become easier to just deal with the craigslist weirdos.

Ebay has forced sellers into a Managed Payment system where ebay automatically takes out fees and deposits payments directly to your bank account. I guess it's because they're trying to cut out paypal. They'll still allow buyers to use paypal to purchase, but sellers are no longer allowed to have paypal handle their payments. In a way it's convenient because you no longer have to remember to make paypal and ebay seller fee payments as ebay will automatically deduct those fees from your payments. Also, ebay's new fees are 12.85%. However, since you no longer have to pay paypal fees it comes out a little less than the previous 10% ebay fee + 3% paypal fee. The problem I have is now ebay has direct access to your bank account. I would have preferred the old way of using paypal as a middle man but ebay has done away with that.
Glad to hear you've had success using MP. I've been reading negative things from sellers who don't like how ebay makes you ship out the item well before ebay deposits the payment to your bank account. There are also sellers who claim they've been selling for 20+ years and have 100% positive feedback yet sometimes ebay will make them re-verify their bank account by making them send copies of recent bank statements, etc.