I bought a Remington synthetic stock set for my 1100 (the wood was getting cracked) and I love it.
Personally, I would stay away from the Ramline stuff - it's junk. Spend the extra $20 and get the Remington.
A pistol gripped stock on a 30" 1100 looks pretty ghey, in my opinion. Also, since I'm a lefty, it's almost impossible to disengage the safety with a pistol grip stock!