DVD Burn/Verification Failure & -R vs. +R Fix

Question

The PROBLEM: (three trials, three failures)
Burning DVD with digital picture files.
Burned from Finder and Burn Folder.
Burns completely but fails verification process.
Appears not to enter the verification process at all.
Error Message: This disc did not verify correctly and is unreliable. Because this disc is unreliable, discard it and try again using a new blank disc. (Error code 0x80020063)
Media: Maxell DVD+R
However, disc could be read and files used in Photoshop despite the warning. In other words, the discs perform as normal, properly burned discs.
The FIX:
Replaced Media, Maxell DVD-R.
Worked just fine.
New QUESTION:
Is there a way to speed up or, more probable, to remove the Verification process step? To burn 2.75GB required about 14 minutes and the verification process seemed longer than that. I am unsure of the verification step because in watching the meter the percentage counter seemed to move slower and Boogie, my bulldogge, was in no mood to wait; he had to go for a walk so I left with 85% to go. When I got back, disc was ejected, no message on the screen, and after testing it was perfect.
The HARDWARE:
PIONEER DVD-RW DVR-K04L:
Firmware Revision: D441
Interconnect: ATAPI
Burn Support: Yes (Apple Shipped/Supported)
Cache: 2000 KB
Reads DVD: Yes
CD-Write: -R, -RW
DVD-Write: -R, -RW, +R, +RW, +R DL
Burn Underrun Protection CD: Yes
Burn Underrun Protection DVD: Yes
Write Strategies: CD-TAO, CD-SAO, CD-Raw, DVD-DAO
Media: No

Answer 1

Thanks folks, appreciate the help.
I prefer the TDK blanks based on success in the past with CDs, but in a pinch and Staples is close by, Maxell was the best they had.
I am burning at 2X, the fastest option offered when burning from Finder. I will try the Disk Ute and drop verification. After burning 4 DVDs now I have confidence in the process and hardware. However, I do a quick eject and re-insert of the disc to make sure all the files are there and readable; this does not take 15 minutes.
I have over 20K digital picture files or apprx'tly 105GB to back-up from my back-up external hdd. Looks like over 25 hours at least including verifying each DVD. I want to streamline the process.
Hopefully I will not prograstinate so long next time before doing back-ups.