I am going to discuss what I like about each series and do a comparison.
A few things i love in regards to the original Naruto show was the friendships. The relationships between Naruto, Sasuke and Sakura. The series keeps a youthful innocents, and continuing development of comradeship. The development of Naruto's relationship with Sasuke is a pivotal area of the plots.
Naruto desperately wish to be recognized, after being ignored and reviled through the village becoming an adult. Sasuke is the better Ninja student of his class, so Naruto connects him based. If he can make Sasuke respect him, all others will have to also. Being somebody that was picked on constantly at school I identify heavily with Naruto and his awesome never say die attitude.
Naruto Shippuden comes about starting roughly 2 1/2 years following the first series ended. Now I almost have to say I prefer Shippuden a lot better than the original show. Some of the innocence is finished, and there is a more melancholy pathos for the series, however the maturity lends Naruto and yet another characters something this program needed. Seriousness.
Shippuden also greatly works with the thought of power bringing danger and responsibility. With Naruto attempting to find strategies to eliminating his reliance on the 9 tailed fox for power, plus risking his own health with his special Rasengan attack.
All of the portions of the series are still present, but with a better maturity level. The comedy also takes on a slightly greater a higher level sophistication, without detracting through the slapstick style the show has always had.
I am going to point out that if you're looking to determine which one is better, you have to watch the initial first. It is not like Gundum where one generally is not regarding the mediocre ones. Naruto Shippuden is often a continuation of the original. In the event you start with it, you will end up lost.
I look forward to seeing the location where the program will progress from this point. If my deductive reasoning meets your needs, the series will most likely jump a few years again soon. Can be, on the other hand take pleasure in the show and can never wait till the next episode happens.