Well obviously 2 steroids will provide more results then 1 steroid alone. Test p is great for quick results and little bloat. Sustanon is a ****y version of test but it can still provide decent results but nothing special. Decca durabolin is a great mass building steroid. It can carry some negative sides that test doesn't, but in the hands of someone knowledgeable can provide dramatic results. These are all dangerous hormones that should only be used by experienced guys who have years in the gym, not weeks or months. Results will vary from one person to another so there is no way of knowing what you can accomplish with them beforehand. One thing is certain if you can't gain without them then you will be sadly disappointed in the results you get with them. You need to know how to eat and train to grow well before you bring aas into the equation.