I've been riding for going on more than 35 years and have been asked about buying a first bike many times. Both of the bikes that you mention are great bikes - the T is the best in my opinion, but I'm biased and that's why I own one. Sure, if you are really careful with throttle control, you can ride either bike. The question is will you really have fun riding a bike that, to be honest, is likely going to scare the **** out of you the first time you really give the throttle a twist. When that happens, and assuming that you don't freeze and wreck, you'll fear the bike too much to make quick progress regarding learning how to ride. I'm not saying that you shouldn't own one of these bikes sometime, but I am suggesting that you consider a different approach. My recommendation is to buy a smaller cc bike like a 250 - 550 cc supermoto or one of those non-faired Ninjas. I don't pay much attention to the models of those bikes, but a 250cc Ninja, or something similar without a fairing is a great bike to learn on. It will go fast enough for a beginner, it's easy to find a used one cheap, and they are easy to learn on. I don't recommend a bike with a lot of plastic bits that are expensive to replace because the simple fact is that you will lay your first bike down - probably more than once. It's part of the learning process plain and simple. You might be thinking, I'm 30 and I won't do something stupid and crash my bike. WRONG. I don't care who you are and how old you are, the bottom line is that you will lay it down. You'll either get into a situation where you enter a corner at what you think is too fast a speed and you will panic and do something stupid. Learning to ride is about controlling your fears as much as it is controlling the bike. I will also say that you'll have much more fear of a liter bike than you will a 250cc class bike for really good reason; make a mistake on a 150+ hp bike and it can kill or really hurt you bad. Save some money by buying a used 250 and buy some good (not cheap) protective gear. Good helmet (you head is worth at least $300 I hope), gloves (hands are really vulnerable), boots (I know from breaking my foot and two toes that having a 400+ lb. bike crash on your foot hurts), armored riding pants (road rash sucks) and jacket (see road rash sucks). This stuff will minimize the pain that you will go through learning how to ride and expect that may have to buy more new gear once you tear up the stuff that you are about to buy. Get geared up and start putting some miles on that used 250cc bike. Read a few good books (I'm trying to remember, but Code has written a couple of good ones). Understand what counter-steering is and how to setup for cornering and most importantly how to overcome your fears. You will have them - I still have them, but have learned to think through them most of the time. Once you can take that bike out and really ride it through the corners - maybe get your lean angles down and actually slide the rear tire just a bit - then think about upgrading to a bigger bike. Another thing that you have to seriously consider is whether you are going to really be a rider or simply someone who owns a bike and never rides it. I don't know how many people that I know that have expensive motorcycles in their garaqes that never get ridden. Before you put down thousands of dollars in cash for a bike, figure out if this is really something that you are going to love.
I will also comment about the Street Triple which is a wonderful motorcycle, but it's in a class close to the T in biting the hand of the rider unless you are careful. They will wheelie in first and second gear and are a blast to ride - I know as a really good friend owns one and I almost bought one before I found my T. I would not recommend a Street Triple as a first motorcycle for the same reasons as I do not recommend the Tuono. It may be a middle weight class bike, but it can be a handful to ride. Not near as mean as the T can be, but mean nonetheless.
Sorry for being long winded, but you asked. I know that you are going to go out and buy whatever you decide to buy - that's your choice. Just do one thing no matter what you decide to do - buy good gear and wear it because it will save you a lot of pain and suffering. Most important is to buy a really good and properly fitted helmet.