I've tried my hand at hotshoe camera flashes but they aren't powerful enough, specifically the Sigma 500 Super and the Yongnuo 560. So, now I'm looking for a cheap studio strobe but I only have about $225 to spend. I'm not sure a Calumet Genesis 200 will be strong enough so I was thinking about the 400 even though it's a little out of my price range. I am also considering the AlienBees 800 but a bit pricey too. Then there's the Flashpoint II 620M, 300 Watt Second AC / DC Monolight Strobe and the Interfit Stellar X 300 strobes that are both within my price range. Out of these which would you suggest or is there something better for under $300? I have a couple umbrellas and light stands so I'm just going to use those for the time being and will not be considering other light modifiers. This is only for hobby so I want to keep my budget at a minimum. I'm keeping the Sigma for a fill or probably a gelled background light so I need one good studio strobe and I think a 300ws one should cut it. So, what strobe would give me the most bang for the buck at $300?