The player is what makes the difference, the equipment is secondary - a poor workman always blames his tools.
One of my student's dads got a Mark VI alto (he was mainly a tenor player, who had a SA80 before he eventually got his holy grail of Mark VI tenor - two of them!). He literally slept with this VI alto for a few days and gave it to me to try. I played it a bit and declared 'It's okay... but I prefer mine' (a Meister alto - made by B & S in East Germany). He soon sold the VI and said he preferred his ancient Hawkes & Son nickel plated alto.
One of my student's dads got a Mark VI alto (he was mainly a tenor player, who had a SA80 before he eventually got his holy grail of Mark VI tenor - two of them!). He literally slept with this VI alto for a few days and gave it to me to try. I played it a bit and declared 'It's okay... but I prefer mine' (a Meister alto - made by B & S in East Germany). He soon sold the VI and said he preferred his ancient Hawkes & Son nickel plated alto.