Thank you so much for your nice words and review Waqas bhai 
The reason i choose the Scan Speak tweeter is that, in a conventional 2 way component speakers, there is always a compromise on SQ. The drivers are designed keeping in mind ease of install.
Very long story cut short a 6/12 inch speaker can not play effectively above 2.5khz (regardless of the brand, price, shape etc) when installed in doors (about 50 to 60 degree off axis) and the tweeters found in 95% of the components sets can not play below 4khz (+,- 1/2 octave). This leaves a hole in the frequency spectrum i-e from 2.5khz to + - 4khz. There will be a dip/hole/gap in the frequency spectrum and one feels that there is something missing (midrange frequencies). I have experienced the same in every 2 way set i owned and or listened to in car.
Below is a screen shot of the actual response of a 6-1/2 inch driver in a car at listening position. The response is measured through a calibrated mic. You can see there is a huge drop in spl above 1.75khz and the drop increases as frequencies get higher. There is approximately 21db difference between 1.75khz and 2.5 khz :o
I also checked the response of various drivers in different cars and more or less i got similar results.
I choose the Scan Speak tweeter since it can be crossed at and below 2khz without breaking a sweat and it would bridge the gap between midbass driver and tweet, therefore i dont feel the need for adding a midrange driver. Although adding a midrange has its own benefits, but if one wants to keep a 2-way setup, one should look for a tweeter which can play low enough to mate with the midbass driver.
There are only a handful of components kits (usually flagship series) available in the market that are capable of going down low to mate with the midbass driver without leaving a hole, such as Dynaudio flagship model which includes the Esotar2 110 tweeter, Morel Supremo, Morel Elate Limited 2-way, JBL 660GTi, Brax M2CPP etc.
