Spare Breast Pump

Hi all. I bought Be Free pumps. I'm 90% EP mum and latch as and when I can. My baby is 2 wks old. i supplement FM but most of the time he drinks my EBM. My yield is around 70-120ml per pump. I try to pump 3-4 hrly. I just feel that Be Free pumps doesnt really clear my breasts. I was thinking to get a spare pump that is portable so I can use it alternately with my Be Free. should i get Real Bubee (heard its lifespan not that long cos cheap), Spectra 9+ or other pumps that u ladies can recommend me? And if possible, doesnt use up too much battery so i dont need to keep charging. thank youuuu