what alarm will i buy?

so heres my truck

2004 silverado 2500 HD work truck  ..crew cab 4x4 6.0L v8

this is my work truck & I usually keep tools in it, it is stripped to the bone including manual locks

I am sick of walking around to every door to lock & unlock it & would like to install power locks AND a security system to put my mind at ease.

I'm a total newb, but have been looking around... kinda overwhelming on what to buy.

what I want:

keyless entry on the same remote as the alarm

the remote to notify when truck alarm has been triggered

can anyone steer me in the right direction here, whats a good combo unit?

thanks

i've tossed around the idea of a remote start too. 

if I go that route, got any suggestions?

I know, I know.  Some new guy shows up and wants years & years of all the members experience & forum posts answered in one thread. 

I,ve been searching some of the brands recommended & I think I've narrowed it down.

viper 5901

I really don't like obnoxious alarms, so the features I like are the warn-away low volume & the silent mode.

The above models seem so similar, all made by DEI, I'm guessing It's like a Chevy/ GMC thing?

When I check prices I am getting ranges from $270 to $649 for the same models?? I don't get it, they seem to be identical.

Oh well,  thanks for the help, sorry to ask answerless questions.  I'll keep researching... or just buy something I don't like.