Welders

[Sticky Signs]

I know this has been brought several times before but just for fun, I thought I'd revisit the subject. I'm considering a banner welder for my shop. Must be able to weld hems, pockets and seems. Ideally I'd like something that's free but seeing how's that's probably not an option, I'll settle for something that won't break the bank
What's everybody out the using? Do you like it? Pros/cons? how much?
Any pics or links would be appreciated.

 

[CheapVehicleWrap]

The RF welders are real nice, but on the other end of the spectrum from free. I kinda liked that auto taping machine that's out there but a little pricey. We've thought about making one though. Sorry, I have no hands-on though since I have no fancy banner finishers.