I would recommend separating your
1. Needs (size is a factor in some situations)
2. Limits (cost)
3. Preferences (looking like an analog cigarette might be a preference but probably isn't a need or limit)
Then google "Electronic Cigarette Comparison" and look for sites which have several admins reviewing dozens of brands, not just 1 person of 1/2 a dozen brand. You also want to look for sites which allow user feedback to get details for things like customer service, faulty or incorrect orders, etc.
Compare the
reviews to your preferences - they can't be expected to match. For example, most reviews preferred most aspects of the manufacturer I went with, but didn't rate it the highest because of price and/or the variety of flavors - since I wasn't concerned with these 2 factors, i went with a different brand than their favorite.
Keep track of the top 5-10 in each review on a notepad. Within an evening your preference should become apparent.