there really is a difference just from 23 to 25 IMO less scar tissue hassle etc as all have mentioned. Personally 23 is the biggest I will go now, anything smaller like 22 21 etc forget that mess.
I do the warming approach especially when had used the 25's, definitely helps the viscosity, problem with just slamming is when using tren lol for me, oh boy the faster/harder I pushed the harder the cough was so I learned to take my time pushing over a course of a minute or longer. Those that get the cough bad now just how wonderful it can be... LMAO
My whole angle with the 27s now is I am strongly considering site pinning in bi's, tri's, maybe calves, idk, I guess maybe being lazy after a handful of EOD even ED runs with tren using 25's in past I'm looking at the 27s as less irritating especially if will be focusing more on specific sites this time around..