winny can be just as expensive as primo (atleast the injectable form). only difference being winny you can get away with 4 weeks,primo needs to be run much longer.
another option are anavar, masteron... which are expensive as well compared to the cheaper AAS.
the cheaper AAS you will discover are the ones that either have harsher sides or are aromatizing compounds which you said you wanted to avoid. however you can run them with an anti estrogen and flush that water weight, but you will still bulk on something like dbol, test or deca because they will increase your appetite and are calorie dependent for best results. (so if you are gonna run them you need to run them right or don't even waste your time, meaning you need to EAT on them) keep in mind also i used to be a great swimmer/triathlete, after i ran deca/test/dbol bulker after that i haven't been able to swim a lick since, i sink like a rock. yeah i can swim but its like a struggle for me now.
primo is NOT calorie dependent, which is why i recommended it for you. good things cost

so you will gain good lean muscle and some strength, and you will avoid any water weight.
in the end YOU need to decide what you want. you have a very good base to work with, and based on your goals you may want to just stick to what you are doing and stay natural for a while longer till you are confident or save enough money to run a cycle with the compounds you want.