Best way to get internet?????

[Mempho]

I don't claim to be an expert on this so someone can correct me if I am wrong here, but....I have found that one of the key differences in the reliability of wireless connectivity is the whether the computer uses a plug-in wireless card or has Centrino internal wireless. I am an auditor and we frequently work with laptops out in the field. We also utilize an application called Citrix that requires a nearly uninterrupted internet stream (unlike browsing and much like an online poker client). Citrix normally "drops out" several times a day on those with plug-in wireless cards while the people with Centrino seem to have very few problems.

Does anyone have any experience to back up or dispute this?