There are important spoilers in this text. If you never played any of the DLC's PLEASE GO BACK.
I recently got EFLC for the PC and I must say it's awesome. I played all games by order that being: IV > TLAD > TBOGT. When I first put EFLC in the tray, I installed it and stuff and immediately started playing TLAD. Clean and Serene, I must say it was the biggest introduction mission ever. It was fun until I saw The Lost fighting against the Lost, Billy was a moron and betrayed us all, in the Dragon Plaza mission he said Johnny betrayed him while he didn't do crap but there was another betrayer with him: Brian. I was really stunned when I killed Brian in the last mission. I liked the connection between some IV missions where Johnny worked with Niko.
Days after I started TBoGT, at first glance I thought it was about managing gay bars and stuff but I've been proven wrong, it was the most awesome GTA I've ever played since San Andreas, it had some small yet difficult missions and yet again I loved how some IV and TLAD missions connected with TBOGT. One of my favourite missions was "For the Man Who has Everything" for Yusuf (Greatest character in GTA history ), we, on a train fighting the NOOSE and waiting for a friend to steal a train, pure GTA style and if Rockstar released another DLC, I won't mind.
Leave your impressions here. And well, I know I don't write my "reviews" pretty well but screw it.