All the Jailbreak dongle in the market is a USB plug and play solution , what you are concerned about is the ability to upgrade because you want the option to flash your Jailbreak with psgroove or new firmware . no one really expect the Chinese team to come out with their own upgrade codes. Unfortunately , most of the PS3 dongle in the market are cheap and not upgradable .
PS3Break :
An image speaks more than thousand words:

"white" version of PS3break you have a ATMEL chip that can be upgraded with FLIP and without any troubles or any additional soldering work (thank God!).
"pink" version of PS3break you have a PIC micro controller with a FAKE upgrade button and it can't be upgraded (yet or not) as easy as ATMEL's version, probably needs soldering work. Bottom line: you can't update your PIC at the moment, no matter what resellers or manufacturer are saying!
NOTE : The White version of PS3Break are totally sold out , do NOT buy PS3Break anymore .
-----------------------------------------------------------------------------------------------------------------
PSJailbreak CLONE

Obviously it is not a ATMEL chip , it can't be upgrade either .
-----------------------------------------------------------------------------------------------------------------
PS3Yes

The chip is AVR at90usb162 , yep , It can be upgraded.
-----------------------------------------------------------------------------------------------------------------
P3Free

I don't have a P3Free personally , but there is a section on PSX-SCENE sponsored by P3Free team on which you'll get the info that you can't update P3Free via USB.
At least you have to purchase a soldering kit and pic programmer for the update .
-----------------------------------------------------------------------------------------------------------------
UsbBreak

The manufacturer of UsbBreak is the same as PS3Break , just a cheap alternative way to jailbreak the PS3, of course , it is not upgradable for sure .
-----------------------------------------------------------------------------------------------------------------
If anyone can provide the info of the original PS3KEY OR PSJAIBREAK , it would be appreciated.
This article is not fully completed, I'll update it when I got more info .
Overall : PS3YES is the best choice if you need a plug and play solution .
SOURCE :
http://psx-scene.com
http://bbs.a9vg.com
************* [ - Post Merged - ] *************
I would recommend PS3Yes rather than PS3Break if anyone still want to buy a PS3 Jailbreak dongle . It's based on ATMEL currently , you'd better place an order now , Once they are out stock, and they have a market to supply, I would not be surprized if they too switch over the PIC chip.
Lightake.com if anyone want to buy .