For what it's worth, I've owned the HF Titanium 125 flux core machine for about a year. It has been better than expected, especially at the price. Today its listed at $209, and in my opinion is worth every penny. I don't work it to death, and I try to keep the duty cycle in mind and let it breath a little, taking frequent short breaks. That said, I have run beads around 3' long with no issues whatsoever. To put my work load in perspective, in 11 months I have gone thru a roll and 2/3 of .30 wire. I don't know if thats a light work load or heavy, just trying to give you some perspective. Maybe the aspect that gets over looked most often with this little machine is the weight. It uses an inverter rather than a transformer, and the entire unit, cables and all is around 15#. It comes with a nylon purse strap and I may be the only guy who has ever actually attached it and used it. That wouldn't be feasible with any normal welder. I actually mounted mine in an old heavy plastic milk crate and attached the strap diagonally. This setup allows me to tote it around my house/yard/shed easily while keeping the cable connections and everything wrapped up safely in the crate.
The warranty is 90 days I believe, but I'm sure that you could extend that at the register or by joining the inside track club.
Oh, the quality of weld that this little machine can lay down exceeds my ability, and I am positive that a better hand could really make this girl hum.
Hope this helps.