PMDG, Level-D, Qualitywings etc.TOPCATFS2CrewASX (I keep putting off upgrading it...)ORBXAESQuality scenery like FSDT, FlyTampa etc.Carenado Real SkyXVarious freeware texture enhancements (such as PicNic)VATSIM and sometimes IVAO Carenado RealSky is a GREAT add-on for someone looking just to improve the feel of the sky and horizon without dishing out 40 bucks for REX or 50 for FEX. In the near future I will probally 'upgrade' to REX but there are some great texture updates on Avsim. GEX and UTX sounds great but I usually only fly VFR in Orbx regions and Hawaii where there is plenty of mesh/photoscenery add-ons plus FSDT airports. Oh and of course the upcoming NGX :)

I never got to like EZCA.. the shaking effects were just way too exaggerated in my opinion. But that's just me, because I'm sure I missed something while setting them up. My list of realism addons is fairly short. - PMDG- ASE- REX- Imagination (because it's going to be some time until you can max out every FSX option with highly demanding addons and still keep a fluid frame rate.)