Welcome on Pakwheels and Meguiars thread 
3M and Meguiars same as 3M bought Meguiars in 2008 
In view of my personal experince 3M is good for Paint correction stages like 3m sand papers are world renowned, their componds are also very effective but expencive as Meguiars professional range same effective as 3m and also quite cost effective.
I personaly using Meguiars professional range M105 compound which correct 1200 grit sanding marks easily and M205 finishing polish best polish to finishout M105. We imported gallon packings for Detailing centers and also giving pw members in 1.5 liter open bottles.
Meguiars step a head in finishing products as in meguiars range u have wide range of glazes, polishes , cleaner waxes, sealants, finishing waxes, detailer spray etc etc
Mashallah u have new white car so u dont need polishing at this stage, start with Meguiars cleaner wax rs1100 and topup with Meguiars Ultimate paste Wax rs2100 and use Meguiars professional range Shampoo Plus 1.5 liter rs1125
for tyers Meguiars Endurance tyer spray rs 950 and for interior Meguiars Quik Interior Detailer rs700
This is all u need to start with 