As to alternants, do you have one with to too? I use schwa [@] before consonants and slower [tu] or faster [t@w] before vowels.

To alleviate your curiosity, I find (though I had ta check), that apparently I do the same as you do with consonants, but ta ease my speech when I'm talking quickly, I only use the "oo" sound when the next word starts with the "ah" sound. Man, you people are makin' me think too much! 'Druther just talk 'n get on with it!