Hi, I currently have a basic verizon plan which suits me just fine, as almost everyone I talk to is on Verizon, and I have unlimited text. This is on a "dumb" phone. I'd like to upgrade to a Droid Eris. I like the style of that phone more than every other Droid. I really don't care to use all the smartphone features. I just want to feel current with the times and have one. I would like to simply have the $15 data plan added on. Is this possible? Or are there several other fees that show up when you add a smart phone? Last thing, keeping all internet use at a minimum on the phone, is 150mb enough? I'm not one of those people who has to check email or facebook while waiting in line at Subway. Thanks.