Is this a good begginer choice?

[maniak]

As I said, I'm not really an addicted smoker

If you are really not addicted, is using an e-cigarette a good idea? Maybe you should reconsider that...

About my last question, should I pick the riva 901 or should I pick the dse 901?

It depends. Usually the Riva is better choice (because of the battery), unless you are smoking only a few cigarettes per day.

 

[DM]

I have both. I like the 510 better. also they are more common

 

[maniak]

I have both. I like the 510 better.

I believe, he asked about Riva 901 vs DSE901 not 510.
In fact, at the moment I'm using 510 series too but still I think that 901 series has a little bit better taste so it may be more suitable for him.

 

[nosmok]

I started with a DSE901. Only thing I didn't like was battery life. I would have gone with a bigger batter if I would have known better.

 

[RuiGomes]

If you are really not addicted, is using an e-cigarette a good idea? Maybe you should reconsider that...

I have decided to go with the Riva 901.

I am planning to use e-liquid without nicotine, so what would be the harm that this e-cigars can do?

This is my final question before proceding to order. How harmful can vaping with a nicotine-free PV be?

 

[maniak]

This is my final question before proceding to order. How harmful can vaping with a nicotine-free PV be?

In the case of tobacco smoking addiction is complex. It is not only the nicotine addiction. Of course, the presence of nicotine in tobacco products increase the addiction but the habits, gestures and so on are even more important than nicotine in this case. That's why it is so difficult to quit using means different than PV.
In my opinion, it is a little threat that in your case, habits related to PV can become an addiction. So, answering your question: probably it is not harmful directly only indirectly.