My experience with Tbol is that it is so subtle you don't really notice anything until 6 weeks have gone by. At that point you feel stronger, more vascular, and it virtually has no sides. It's a steroid you can run for along time due to it's relative low toxicity. An excellent bridge or cruise steroid.
IMO, Var is more powerful and overall a superior steroid. Var gives more strength, vascularty, and promotes weight loss more than Tbol. Some bro's run the two together with great success. Var has the downside of fucking with your lipids, whereas Tbol does not. If you run Var you should load up on EFA's, Omega 3-6-9, and policosanol, and a way to offset those cholesterol issues.
I run Tbol at 40-80mg/day.