Hey shaurya!

Both the colleges are good in their own ways.

But if you want a comparison between them , then let me tell you that there are many factors on the basis of which any college can be termed as better or worse.

I am giving you a comparison analysis between both the colleges with respect to many factors :

hostels 

SVNIT , Surat is much better .

The rooms are so well maintained. You can also get single occupanct rooms.

Infrastructure

Again SVNIT is better

Academics 

Both are equal. But in some branches like CS /IT , Surat lags  behind.

Placements ;

Again , SVNIT is better in terms of placements.

Hope it helps!