Hello.
Thank you for your query at DoctorSpring.com
I understand your concern.
Comparing the two drugs, pseudoephedrine is a better choice ( Sudafed ) because there are still some doubts regarding phenylephrine as a decongestant. Also since it works well for you, you should persist.
Your BP is also fine and hence there is nothing to worry about.
Feel free to discuss further queries,
Regards.