mac or flowmaster with bassani x pipe?

I'm planning on doing a full MAC exhaust, eveything I read and everyone I talk to have only good things to say about them (great sound and great performance). As for the x-pipe vs h-pipe controversy......the h-pipe in most applicatins is a better set-up. The x-pipe's are far superior once they are combined w/ a straight through/free flowing muffler (i.e. dynomax's ultra flows etc)

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'90 LX 5.0;12K original miles (no sh*&);3.55 gears; March pulleys;Edelbrock Performer Heads;BBK 1 5/8" equal length shorties;MSD 6AL ignition w/ blaster 2 coil;FMS E303 cam;Pro-M 75mm MAF;BBK 70mm TB; Eibach drag-launch spring kit;Southside welded subs;9" K&N cone filter charger;Hurst shifter;Cervini's 3" turbo hood;A/C delete; gutted cats;2 chamber Flomasters;Corbeau racing seats;FMS 30# injectors;JMS chip; Holley 190lb fp;TFS track heat Intake (12.299 @ 113 - 1.78 60')