The Buzz looks very interesting. If I were going to purchase one today.. that is what I would save up to buy.
That being said... here are the ones I have bought and tried, and my opinions (since you asked!)
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Homemade box mod: it was ok../ but too cumbersome for my tastes
Chuck: very sturdy, fired great.. a little too harsh../to heavy for my hands
homemade Laser: great size, a little tempermental, nice size (gave this one away unfortunately.. wished I had kept it)
Laser: also great size.. fired perfectly, didn't like the atty fitting (also gave away)
Saber Touch: beautiful mod, very heavy/ had difficulties getting it to fire because of the touch points
Provape: love this mod, fires everytime, nice fit in my hands, no issues (even bought it used) .. plan to keep indefinitely
Chameleon: neat mod, multiple attachments, had a few problems (bought used) but wonderful wonderful Customer Service at Ikenvape!
Brass Bolt: (don't know manufacturer?) a little strange to fire this one, have not used much
Carlos Juice Box: similar to the homemade box mod, but with a bottle feeder. Difficult to operate.. had trouble getting the juice to the atty
GG Slim: also a great little mod. Fits really nic in my hands but the button is in a strange place (on bottom)
I've also had the 'smaller mod types':
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Ego: good for a beginner stepping into the world of mods.. gives a highter battery life and you can increase the experience w/LR atties
Riva: works w/eog, and is exactly the same in my book
Hello 16: I never tried the completed piece.. I only had parts, but it didn't work with my other stuff the same as the Ego/Riva
HTH!