If I wanted great ease for modelling I would buy these 3
Cinema 4D 9.6 Studio (£2200) - Great rendering and effects and animation
Zbrush 2 (Approx £300?) - Great Modelling set
Endorphin (£8000) - Great 'Mo cap simulation rigging' perfect for realistic character animation...only £8000, well consider really mo capping then yes.
What I would get with my knowledge would improve my work greatly as well...but no, can't afford the buggers.
But on a serious note, with real advice.
Easy (By general standards) and affordable tools to me would be
Free - around £100
Milkshape
Wings 3D (No Animation/Rendering) - Free
Anim8or - Free
GameSpace (Its not as easy, but easy enough)
Silo 2 (No animation/Rendering, very high rated)
Up to £500
Zbrush 2 - The favourite of Speed Modelling, as it includes texturing and works like more like a paint tool (The other speed modellers are Wings 3D, Silo, Hexagon, Mudbox and Modo) (Purely modelling, I think it has some form of rendering)
Hexagon 2 - I use this, its very capable, the cheaper alternative to Zbrush, but bugger in places
TrueSpace 6.2 - Like Gamespace, much more features
Softimage|XSI - Cheapest version - Serious about modelling for games and having CGI effects and can't afford Max, this is a good alternately, has a good set of features. Sort of easy. About £300. I think making normal maps is one of its features (Same for Zbrush)
Cinema 4D 9.5 Base version - Barebones Cinema 4D, easy, fast and has the standard Cinema 4D tools with out all the addons, many plugins avialible, like Baker, which is a lightmapper/Normal Mapper - About £500.