how about swarm control? If the hive is long enough is that the same as adding height? from what I've read and I say again it is only read no experience bees swarm if they dont have room or if the queen is a problem so what have you experienced with this issue?
First things first, if you are new to bee keeping then I would advise you start with a framed hive and learn as much as you can about bee management and join a local association. Understanding what the bees are likely to do at various times of the year is vital and unless your very lucky most associations
only cater for the traditional types of hives. Then consider if you want to get the maximum honey crop from your local area. If so stick with the framed hives like Lang or National.
TB's have been used for thousands of years and they are only one step away from a feral hive, whereas the framed hives were only invented to maximise and simplify honey collection. But to answer your question IMHO swarm control is far quicker and easier to manage in a TBH.
Let me explain.
All the other popular hives with frames - proper swarm management requires another complete set of hive equipment to solve the problem (I'm not talking about knocking out every queen cell in the hope they wont swarm because they will if just one queen cell is missed during an inspection) so if you dont have a spare hive sooner or later you will say good bye to half of your colony.
Now TBH's (In a slightly simplified version) All you will need is 1 more follower board and a few top bars.
If you build the 4ft version which has more than enough space to cope with two good sized colonies and by using a divider board or follower board (Same thing) divide the TB into two bee tight chambers, then the process to deal with the colonies desire to swarm is as simple as moving a few bars with sealed brood and stores to the other end of the hive, add a couple of new bars and open up a new entrance and place the new follower board up behind the last bar and you have managed their desire to swarm in the same way as an artificial swarm. So there is no need to have that second hive sat around doing nothing in your shed.
Like Brosville said they are very easy to make
http://www.lulu.com/content/content_download_redirect.php?metaId=3950238 they only cost a fraction of what you pay for a new hive and they only take a couple of hours to build even with the basic tools found in most peoples garages and you can get as much advice on how to manage them as you want by join the forums at
http://www.biobees.com/forum