i couldn't find the specs on your tennis ball machine because the pdf link isn't working... but you should be able to contact someone from here. this is the manufacturer's webpage.
Since you are not rallying with balls that come from a tennis ball machine, basically because you only hit them once per round. I tend to lean towards a pressureless ball so you can get a consistent bounce again and again over time. One of the best p...
I have the SAM P-1, it came with full spin control and a smart/fast charger which the other guys charge extra $$$ for. Also it seems to be built really well, very sturdy. I got mine for $849 by asking if they had any sales going on! In terms of featu...