I like your mark in the 3rd batch, especially b & c. Well done!
Apart from the di lig, most of the ligatures look a little forced to me and i am wondering wether
they are necessary at all? I am not 100% sold on the font choice either, although i do like the
softness. Have you tried a more traditional arrangement of mark & name?
{Mark} {centered name}

I find the italicized logotypes (1, 3a) a bit more pleasing, visually. The only thing I would fix is the ’Z’ to fit the harmonious curvature of the other letters (you don’t have to, not critical). The ligatures connecting the S-t and d-i in the straight ones make it look too tight and close together.

As for the logo shapes, 1, despite it being first, caught my attention immediately. It says “zing! I have an idea!” the snapping of fingers. I also like 4, but I find it too simple. You should try more variations of 4. I found 3 to be a little pepsi-ish.

Frankly all ligatures in your logotype looks very unnatural to me. My first instinct would be to work on the harmonious ending stroke of “Zett” and make that into a distinctive logotype while taking a plain approach on “Studio” — maybe same font, but lighter stroke, and no distortion whatsoever.

The colors need some tweaking, too. Bur first and foremost: Get rid of all gradient, that’s a no-brainer.

have i already said, that i HATE it when posting disappear before they are posted?
well, typing again...

thanks for your comments!
i made some changes (concentrating on the “3”-series). i got rid of the gradients (they were not intended for the “plain” version). i also tweaked the font a bit, changed the “e” ... finally added the “.com” reference.
i am not quite sure about the colour altogether. i try to avoid a too serious/conservative look (like banks or financial service companies). the pepsi-look, as coupdegrace pointed out accurately is also bad, i’d rather it looked a bit “old school”.

anyway, thanks for your opinion again
rdnzl

as i work in the print section, i liked to display this in the logo as well. although i haven’t got rid of the ligature (yet), this my new effort, making the traingles more vibrant, not so stativ and crest-like. (tried the yellow/blue combination first)

I really liked your last entry overall.
But why is that “.com”_? Is it a virtual studio_? Also the word “Studio” is looking too tight to me. You may try balancing your whites and the blacks in “Studio Zett”.

Also try making the sides parallel to each other where the colored blocks are overlapping.

satya