It really depends on what you want to achieve.
#1. If you want to increase muscle mass and not be bothered with water retention issues, then you could stack Tren (150mg) with Test (600mg) 8-10wk cycle for example with suppl - Fish oil (4g per day) and Letrozole (1.25mg EOD) this is optional. For your PCT - Novaldex (2x 20mg/45 days), Clomid (2x50mg/30 days) and HCG (2,000IU EOD/20 days).
#2. If you you want to optimize your fat loss, then Tren plus Var + Clen may suffice. However, see your doctor before running any stack/cycle, as your health should always come first.