Uhmmm... ignoring the whole age and fairness thing for a tested athlete... You might want to consider TNE or test suspension. No other compound has given me as immediate increases in strength and aggression, but then again I've never used halo. TNE is fantastic and I have had great results with it even though my training is structured to emphasize hypertrophy and aesthetics, I am not a strength athlete, but TNE makes me want to chase PRs every time I pin it and takes my training intensity to the next level. Only problem is it converts to estrogen really quickly and readily, so an AI is mandatory and expect a little bit of water bloat, but your joints will feel great.