An Army for the Masochistic a.k.a. the Grey Knights

Well, Bill strong armed me into getting the Grey Knights. And after reading the forums, the general opinion is that they are the hardest and weakest army to play.

So this is where you guys come in. I need any experience you guys have had playing with or playing against the Grey Knights. Tell me what you guys thought suck when you played and what you units you thought were decent. I have read the forums and everyone seems to have different opinions of how to play them, so I want to see what you guys think.

I am trying to get as much info about the army Bill conned me into , to help with the what else I need to buy. I am thinking of getting an Inquisitor and friends, as well as some Stormtroopers and IG and maybe a Leman Russ.

Thanks a lot guys for the help.

So far I have the following:
15 Terms
31 Grey knights in PA
1 Daemonhost
1 Dreadnaught
1 Land Raider

you need 3 lr to be competitive.

Terms are good with psycannon or Hflamer

get some cheap 5 man storm troopers to fill up slots if you need GK get them in 6 man squads with 2x Psy.

read the stuff Max posted about Grey Knights in the 40k forum.. it's good stuff.

Yea, i read that in Dakkadakka. Bolter and Chainsword also has good stuff on thier forums.

The ting is that I don't plan to run a pure GK army. I have a soft spot for the =I= (inquisitor) and want to field an army that includes =I= and some IG for numbers and AT power.