Is iJoomla Magazine best for Article Management

We have a site, www.foretagande.se that we are upgrading from Joomla 1.0 to 1.5

We are also considering a few changes/upgrades in other parts at the same time.

ARTICLE MANAGEMENT
Currently we are using iJoomla magazine but we are thinking of maybe using K2 also.
Which is better for our articles? iJoomla or K2?
If we decide to change to K2, what will happen to our URLs? We want to keep THE SAME URLs- will this be possible with K2?

E-COMMERCE COMPONENT
We are also going to build a community and will most likely use JomSocial or Community Builder .
for our E-commerce component, will Virtue Mart work with JS?
Are there other e-commerce components that will work with JS?

FORUM PLATFORM:
We use Kunea or stick with SMF.
What will a migration to Kunea do to us? More Extensions or less?
Possible to migrate from SMF to Kunea?
Other forum platforms that we can use?
Is it possible to integrate projectforke or another collaboration tool?

Any information, suggestion or advice is greatly needed and appreciated.

Thanks.

 

recording to me, you should use K2.Ijoomla compoment is not good for seo.

 

Thank you very much for your reply.

 

I purchased iJoomla Magazine and iJoomla portal two years ago with lifetime upgrade guarantee but I currently don't use both of them. They eat up my RAM!!!

 

and one more thing there was a article somewhere over the net about some sec. issuess in iJoomla Magazine