(4.5/5) - I subtracted .5 due to the wait times.
No doubt this is the ABSOLUTE BEST place to get samosas and South Asian sweets in Mississauga. Every single experience I have had here has been positive, and what I admire is that the samosas are always warm and fresh. The difference in quality between the samosas here and at your regular South Asian grocery is enormous - since Pak Sweets is relatively busy, it is constantly making multiply batches each day. Similarly, the Mithai is always very good (all my guests also agree!!), it has a nice soft, yet strong taste.
My only objection is that if you're in a hurry then don't bother stopping by here; sometimes there is a line up outside the door, and only one cashier is present. Also, if you ever get 2-3 customers ordering samosas in a line; the wait time exponentially increases (they make samosas on the spot). May I strongly suggest bringing out a second cashier?
Overall, this place is a hidden gem for South Asian snacks, the Mithai and Samosas are to die for - just ensure yourself that you are comfortable waiting 10-15 minutes if there is a line up!