Working with pvc

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Thanks for the advice.

I read a really good article about working with pvc a month or two ago and now I can't find it.

I am wondering about T's to split flow. For example a 1" pump output dividing into two 3/4" lines for the return from the sump. A regular T should cause loss of pressure/flow just from the shape of the T. Do they make "Y" shaped T's?

Also I'm wondering about the pro's and cons of flex pvc versus regular pvc, and how to glue the flex pvc. Also where any good Canadian mail-order places to buy all the plumbing parts, for those of us who live far from a Home Depot.