Law form?I guess you mean 'firm'.

If you want my  sincere advice,then its its better to apply yourself-you will save a boatload of money.These law firms can be very uncouth.

 If you put a little bit of effort into research its not very difficult.

I did not use a law firm to apply for either my wife's citizenship or my green card,i did it myself and there was absolutely no problem at all.

That's just my opinion.You should go for a law firm if you are more comfortable doing that.About murthy.com,i haven't the foggiest.