my Makita is probably older than most on here.
Probably...
I still have the original Makita I bought back in 1988, think it was $165.00 and back then it was thE rotary buffer to have...
My personal RB for over a decade now has been my trusty, dusty Makita, Note how the sand-cast, textured finish on the aluminum head of my Makita Rotary Buffer has been worn smooth after years of buffing. At the end of the day I would usually be bleeding in two places on my hand where it rubbed mostly because I was to dumb or lazy to wear a band-aid, or put some tape on my finger or knuckle where it rubbed.
My son-law painted the car with PPG best, 6 coats of clear, many sanded off. It has been wet sanded to 3000 grit, Menzerna power polish, Meguiars 105/205, Menzerna Finishing Glaze. Now what after paint cures out?
Zaino Z2 Pro is a very unique paint sealant that creates a very nice, high gloss, high shine finish that beads water like a son-of-a-gun and lasts a long time.
The description of your paint sanding and polishing process sounds spot-on for a show car finish and without any wax or sealing product it should already have a deep, wet shine.
I'm a veteran of the Zaino vs NXT wars that raged on forums from 2004 to about 2006, and many Zaino users are very loyal to the Z2 product and how it applies and wipes off.
There area a lot of great products on the market that will give you that show car look you're looking for but the application and wipe-off is going to be very different than the Z2 product.
Are you really happy with the Z2 application and removal process?
I'll show to cars we've buffed our recently that now have paint that looks wet... but both of these used very different products than the Z2 paint sealant...
1954 Ford F-100 - Modeled by Janna
LSP = Pinnacle Signature Series II
1972 Corvette Stingray - Extreme Makeover - Process and Products Used
LSP = Prima Banana Gloss Liquid Wax Dodo Juice Banana Armour Hard Car Wax 250 ml
We topped the Prima Banana Gloss with Dodo Juice Banana Armor...
Flex is known for their high quality power tools, here's Nicole using the Flex 3401...
After machine polishing here are the two waxes we used, to be honest you really only need one of them and you'll get the same great results but they are very different in their application and removal than Zaino Z2
Next we machine applied Prima Banana Gloss using Flex 3401 DA Polishers with Griot's Garage Waxing Pads
We topped the Prima Banana with Dodo Juice Banana Armor using LC Gold 5.5" Jeweling pads on both a Meguiar's G110v2 and a Porter Cable 7424XP
The Banana Armor is a hard wax that you apply and then allow to dry to a light haze before removing. The Pinnacle Signature Series II is a soft wax that you wipe on and then immediately wipe off, no need to let it dry.
Since you've done the right prep work to the paint either of these is going to maximize gloss, depth and shine.