Honestly if you just wanna build a nice kit I would recommend any of the Tamiya kits. Even the low end TL-01 series are lots of fun to build. Tamiya has probably the best instructions, they make you build everything. I have several Tamiyas and I must say I really enjoyed everyone from the TL-01 up to my TCT-1 which was a mother of a long build
But you will learn to appreciate the real quality of Tamiyas. They make tanks. I have races both my mini cooper and tl-01 in the TCS races and as have never broken a piece. Which is amazing when you see them run. Another cool thing about them are you can get kits from under $100 and up to $500+. All of them are pretty challenging to build. When you open those boxes it's almost over whelming! I really think out of all my builds my TXT-1 was the most over whelming. Check it out.
http://s131.photobucket.com/albums/p...t=716ff9e4.pbw