D3200 is truly made a an entry level camera. Biggest gripe is the mediocre focusing performance and inability to use D-series lenses (Which would save you lots of money in the long run if you're building a lens collection. e.g. 50mm 1.8G=RM700+, 50mm 1.8D=RM300+), No being able to fully utilized the Commander feature of the Nikon flash/CLS system is another major handicap.
The D90 focuses decently, is able to use D-series lenses and is able to support Nikon's CLS system. However D90 is a really old camera circa-2008. It's focusing, sensor & processing technology if virtually obsolete.
The only real contender currently is the D7000. However Nikon is rumored to release a new range of cameras this year.