There is very little hard data on reliability. The only data I know of is from Consumer Report's annual membership surveys. Over the last several years, GE (and its Hotpoint subsidiary brand) have been far and away the most reliable brand of electric stoves with defect rates of 5% or less compared with 10% and greater for most other brands. The most recent membership survey (40,000 CR members who bought a new stove between 2007 and 2012) showed Hotpoint with a 4% problem rate, GE & Whirlpool with a 6% problem rate, and everybody else with problems rates on electric stoves over 10%.

Samsung is not listed in the CR results. It new-enough to the US market for stoves that apparently there were not yet enough responses on it to generate usable survey data.

As for GE customer complaints, they may be on the rise due to changes in GE warranty service. As noted in several threads here, GE apparently decided to outsource its warranty management services to A&E, the sometimes infamous subsidiary of Sears. As exemplified by several long running threads here and at ConsumerAffairs.com, A&E service issues in some parts of the country have generated a great deal of customer ire. See this thread:

http://ths.gardenweb.com/forums/load/appl/msg101841077389.html

Samsung warranty service has had its share of issues on other kinds of appliances. In my area, Samsung seems to rely on the likes of A&E and the Geek Squad which have poor reputations for service quality and generate complaints. You might try a google search on samsung + appliance + warranty + complaints.

Another aspect of rising complaints is that the planned life of stoves seems to have shortened, or at least the life expectancy of circuit boards has shortened. A decade ago, it seemed that rangess were expected to have an average life expectancy of 10 to 15 years. (meaning that half of them would last longer and half would not). Within the last year, ConsumerAffairs, Consumerist, and Consumer Reports have indicated that planned life expectancy has dropped into the seven year range for many appliances. So, with GE having a large market share, there may be a lot more disappointed GE customers for the time being. As Samsung stoves age, we may well see comparable levels of disappointment.

A different way to look at reliability, quality, and service issues is locally.

When you buy an appliance, there is some nonzero chance that it will need to be repaired before you sell your house. National figures (e.g., from CR) give an estimate about that likelihood, but if your appliance needs service (by someone other than you), then there's a 100% chance you'll be dealing with a local repair service.

In that case, who offers repair service for X and Y brands, and what is the reputation of those companies in your area?

These are important questions to ask locally before buying, even though its entirely possible that whoever does repair your selected brand now may have retired before you need their services.