I paid for and downloaded the 'Premium' version a couple of weeks back when the wrong .deb file was on Ovi. I left a review on Ovi Store to warn off any other N900 owners, complained to Ovi, plus posted here on TMO about it. Ovi pulled my review claiming that it was against their T&C's but they also immediately pulled the paid application (which was a rip-off) - a result of sorts.

Qik Premium has just recently reappeared and I was able to download it a second time. I can confirm that this latest version is indeed a slight improvement on the original free one. It allows the option to select three different capture modes: Low (400x240) Normal (640x348) and High (848x480). It is also possible to download saved (uploaded) Qik videos to your device by logging into your user profile, picking a video and then saving it to file instead of opening it with Media Player.

I've tried streaming video and it's really only possible in the lowest video mode, even over WLAN. Videos Qik'd in High resolution take ages to upload to Qik's servers and will not stream at all. I can't realistically see that this current paid version is worth paying $10 for, $2 yes but $10 no.