Bypass Kits for Alarm/Remote Starter Installs

A question for all the folks who've done research on alarm/remote start systems or who install them.

I plan on having a Viper Smart Start (remote starter) system and no security installed. I would like the capability to add security down the road if I feel the need for it.

Which one of these bypass kits should I get?

And does the type of bypass kit used even matter as a consumer of the product? (Sounds like this would be information an installer would need)

A) FLCAN - DL-TB

B) Xpresskit - DBALL or PKALL

c) Fortin - EVO-CAN

FLCAN looks like the same exact system as iDatalink, OmegaLink.

Are there any other bypass kits I'm missing?