Duckhombre
I'm not sure what to say to explain the situation... Sust has short esters in it, but also really long esters, so it will actually take longer to really get going. Enanthate is a good middle of the road ester. Testosterone is testosterone, and the only difference int the type of gains anyone gets is going to come from the fact 250mg from one company is going to be different from 250mgs from another. People will say sust gives more bloat that enan, or some other crap, but is only because dosing is different from lab to lab.
For a newbie such as yourself, not knowing what what you have acsess to, and not wanting to talk about it, I'd say go with the enanthate.