Asp.net flash muti-file uploaders - Is MultiPowUpload ok, or which is the best and easiest?

I am considering using the MultiPowUpload control from element-it on a project, as well as perhaps on a second. Does anyone have any feedback on that particular control? Does it actually work as advertised, handle errors well, etc?

I've played with quite a few others, but that seems the best so far. The easiest for the junior members to get off and going with, nearly all features out of the box, etc.

Some of what I need to do:

• Multi-select of files (from a single 'browse' click, not multi-textbox)
• Progress bar (client requirement)
• Queue for upload (it's ok if it can only upload immediately)
• Feedback from server - custom error messages (permissions,etc)
• Pass the session ID automatically, but I can use a URL hack for the upload page too
• Be able to remove fil开发者_高级运维es from the queue
• Support large files (~50MB, really up to 300mb would be perfect)
• Accessible/usable JS api
• Can change the view style a little bit at least!
• Localizable - we need english, chinese, italian, and possible a few others
• Resume incomplete transfers (eg, connection dropped, so on, not required, but ++)

I've been working with all of these below, and gotten most of them working in demo pages, finding issues as I go along.

• Fancy Upload - quite nice, but no feedback from server, uses mootools not jq
• MultiPowUpload - looks good, resumes, no flash cookie bug, $149
• Uploadify - looks reasonable, real world though?
• YUI - mostly custom code, will work but tedious
• SWFUpload - no progress bar, otherwise pretty basic & good
• JQuery Multifile (fyneworks.com) - inconsistent browser support
• devex / telerek - missing to many required features, sadly
• PL UPload - nice, but missing 'retry' and error reporting. may be able to add

So, does anyone have any real-world experience with MultiPowUpload, or have suggestions for a free or commercial option?

PL UPLOAD WON - for now! If we get complaints, or find it doesn't work in our real life scenarios, then we'll consider switching to MultiPowUpload. But it is good enough, and we can write some JS to do a few of the missing things. With chunking I had no problems with 300mb uploads. Yay.

Did U try this one.

Plupload

Allows you to upload files using HTML5 Gears, Silverlight, Flash, BrowserPlus or normal forms, providing some unique features such as upload progress, image resizing and chunked uploads.