Should i buy a senegal or grey parrot?

Should i buy a senegal or grey parrot?
I'm looking at buying either a Senegal parrot or a African Grey, I know many people will say I should go for a senegal as this is my first bird. However, I'm at home for the majority of the day and also at evenings with the exception of 1 day per week when i have to go out 9-6 (but could pop home at lunch) but would be home all evening and also for a few weeks out of the year I am on teaching placement and will be out from early in the morning until 5.
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