There are some requirements you need to meet before getting the Intel® Solid State Drive 750 Series, please check the following link: Before You Buy an Intel® Solid State Drive
Regarding a similar drive, as for consumer use the Intel® Solid State Drive 750 Series is the fastest drive we currently have, however, there are some Data Center drives you can also try, here is a link with a comparison between the Intel® Solid State Drive 750 Series and Intel® SSD DC P3700 Series: ARK | Compare Intel® Products
Please let us know if you need something else
In the following link ARK | Compare Intel® Products you can also compare one of the other series, the Intel® SSD DC P3608 Series. There are some difference on this one, for example, the interface it uses is PCIe NVMe 3.0 x8.
The Intel® SSD 750 series was released only as a PCIe NVMe interface since this is a new model and right now, this series, will be NVMe drives.