Everyday glass go the ISO, they are excellent, look well on the table and of course are designed for "tasting" wine. They cost $NZ3.38 a copy.
If you can get the XL5 (125ml) as they are just that little bit taller and therefore look better than the standard XL4 (120ml).
For special occasions chose the Riedel Vinum series (more robust than the Sommalier series and almost as good), in the shape of the wine you drink most. Remembering that this will be the wine you may also splurge on as far as quality (price) goes. The Vinum Pinot glass is $NZ80 retail.
Spiegelau are as expensive here as the Riedel, thogh this may not apply north of the Peanut Border.
Anothe good series is Orrefos "Susan" for red and "Illusion" for white They cost me $Aus5.00 each, at D.J.'s (but 25 years ago). I use these for my everyday as I can't take them with me (no pockets in a shroud).