Generally speaking ( I say generally speaking because you offer no stats ) Test is a much better choice. No Deca dick worries and better overall results I believe. Deca is never to be taken alone without test anyway. Unless if you're certain that you're one of the lucky individuals who never get deca dick. Deca is great for the joints.
And never take test without an anti estrogen. I perfer Femara. Some wait til their nipples get itchy, THEN take an anti e. But I'm against that approach because anti e's also help with lowering water retention, therefore keeping blood pressure within an acceptable range. High blood pressure is not good for your kidneys and is "bad" for many other reasons as well.
You have lots of research to do bro. If you're young then your natural test should be enough.
If you're ever to put anything into your body, make sure you do your research. MANY ( some of them huge ) people at gyms have gyno, or experience unnecessary side effects and consider them to be the norm and offer advice based on their experiences.
I know a guy, who doesnt know nothing about steroids but just wanted to juice. He'd hear about Deca, tren, whatever and get all excited. So he listened to his trainer, and took Masteron, Deca, Anadrol, Testosterone Enanthate, and a shot of tren that he didnt like because he got a sore shoulder after the injection.
No anti e's no nothing.
Only HCG during and after the cycle.
Ask anyone on this board and they'll tell you he and his instructor were stupid.
So big guys at gyms who have juiced before arent always the best source of information or advice.
These are powerful hormones that you'd be putting into your body. Not candy. So do your research. You have nothing to lose and everything to gain. Who knows, you might end up being convinced that shorter cycles offer the best gains vs sides ratio? Or in anavar instead of test, or whatever, depending on what you want and how much you want to aviod the sides.
Whatever your cycle may be, and for whatever amount of time. You'll still need to know how long whatever drug stays in your system as well. You might not want to do a 10-12 week cycle using Testosterone Propionate for example.
Bottom line is that theres so many variables here. So do your research. Then make your own decisions, then ask for criticism.
Just my 2cents.