Every card should fit except the the Zotac. I would stay with a card under 9.5" long to have room. No point in getting the GTX 750 Ti and certainly not the GTX 750 with the newer GTX 950 out if this is your price range. This EVGA GTX 950 below is small and will give you a lot of extra room which can be found at newegg for $139. If you have a Corsair 750 watt PSU, then you could easily buy a better card such as the GTX 960 or R380 and find one that would fit. The dual fan cards are always going to be longer so just keep an eye on the card length.
The "Ti" version of Nvidia cards is the better and faster card. The GTX 950 does not come in a Ti version. However, they do make several versions of this card with many different factory overclocks making them faster than the stock speeds. For example; the EVGA GTX 950 FTW probably has the largest overclock of any of the cards and will reach performance close to the stock GTX 960.