If you are setting up a home bar, or are a serious student of drink you need the proper glassware and if you are doing things properly a lot of it.
Frankly I am disappointed by a lot of the glassware out there currently -not to mention the cost of it.
A lot of the martini glasses out there now are suitable for keeping fish in but not a drink.
A too large martini glass means your drink will get too warm before you have finished it- a ugly proposition.
I suggest going to estate sales to find good quality glassware- it is cheap and plentiful.
If it doesn't all match? Well at least you don't have to spend money on those glass charms so people can tell their drinks apart.