I like stair-stepping, and long range of motion elipticals on a high-resistance setting for my cardio. It will burn calories/fat while at the same time putting less stress on your cardiopulmonary system (unlike running). You'll get a great sweat going too. I know most people hate the thought of this, but when I organized my workout with 20-30 minutes of cardio at the BEGINNING of a workout, I could still do my full lifting routine, while maintaining a heart rate of 110-140 with small drops between sets, I lost 3-5% bf (on cycle) and got my first real visible six pack within a month.
There are a lot of other cardio options out there, like the bikes, but I can't ride a bike before I do squats as it causes knee pain I do not experience otherwise. HIIT can work too, if you do long sets of weight free lifts for a solid 20 minutes you can get the same effect. Try a few things and see what works for you, then you can use what you find out during your "cut". Tren is really nice to get extra results, but I can personally only run it for 5-6 weeks before my cardio is effected (tren cough, breathing). Masteron works well for cardio and stamina, some will say it is not worth it unless your basically in competition shape already, but my workouts on it were longer and harder (which is where the difference comes from, not the drug itself) than any other combo I've done.
Extra rant: ON THAT NOTE, I hate when people report that certain drugs aren't really worth it because they added it, changed nothing else, and expected different results. Even with basic test, if you don't find yourself exercising more intensely than before the cycle, obviously nothing will change. Masteron may be more effective for people with 5-8% bf, but I used it at 13% once, and because I was able to workout harder, I dropped down to 7 or 8% pretty quickly. The point I'm making is, steroids don't make you more muscular or stronger, but they simply allow you to train harder, which ultimately will dictate your results. Ask anyone who took steroids, didn't really workout or eat right, and didn't properly research the process, and you'll see puffy people with big nipples and bald heads because steroids are flat out awful for you if you do not take advantage of the changes they cause. YOUR WORKOUT, more than diet even, and different types of drugs, is what gets the results you're looking for.