Let's break it down to individual members:
-------------------------------
The Other Half:
Sammy Hagar - Still has 90% of the vocal abilities and range that he had in his prime during the 80's. Sammy is a very passionate performer and an energetic entertainer. Sammy is known to bring the party with him, and makes 200% sure that everyone has a great time and gets their money's worth from his shows.
Michael Anthony - Mike is a great bassist, and has enjoyed very positive reviews from many bass player magazines over the years. Mike also has the signature high-tenor backup vocals that became a staple of the Van Halen sound in both the DLR and Sammy days of the band. Mike shares Sammy's passion to perform and entertain a crowd. Mike does not like the idea of someone (specifically EVH) going onstage drunk and having a bad attitude towards the crowd and the band members.
Victor Johnson - Vic is a great guitarist. He is not as good as Eddie Van Halen was in his prime, but is currently much more predictable, consistent, and stable than EVH has been in recent years. Vic doesn't use the whammy bar, heavy tapping, or harmonics like EVH does - but Vic lays down the rhythm and the lead in a very skillful way. Vic is a great player and entertainer.
David Lauser - Dave is just a great, solid drummer who keeps the groove going for The Other Half. Dave goes back with Sammy to the pre-Montrose days, and has played on various Sammy Hagar albums such as Standing Hampton, Three Lock Box, and VOA.
-------------------------------
Van Halen 2007
Eddie Van Halen - As all of us would probably agree, Eddie has created some of the best rock music on the face of the planet. He is known as the greatest guitarist that has ever lived. However, Eddie has always had a drama side to him. He seems to get easily frustrated and angered when things don't go his way. In the 90's, Eddie had a battle with tongue cancer and alcoholism that ended in the divorce of his longtime wife Valerie Bertinelli. This sent Eddie into a downward spiral of alcohol and drug addictions, ending in a short rehab stint in the middle of 2007. Most people who have worked with Eddie from the late 90's through 2007 have admitted that he is very difficult to work with, and doesn't seem to have the passion to entertain crowds that he once embraced. He seems to be more passionate about getting his own way, regardless of what his fans and bandmates think about his unpopular decisions.
Alex Van Halen - Alex is undeniably one of the best rock drummers alive. He is very capable of laying down a tight rhythmic groove for his brother's bands. However, Alex is known to cower to his brother Eddie's tyrades and rants, and basically goes along with whatever Eddie tells him to do. He defends Eddie even when there is no justifiable defense, which I guess is a common thing for brothers to do.
David Lee Roth - Dave is known for big talk and little action. Dave could have been a very successful marketer. He knows how to pump something up bigger than life. However, when it comes time to deliver the goods, Dave is known for forgetting 50% of the lyrics, and his vocals are pretty much shot compared to what they were in the 80's. He has lost his signature scream, and most of his vocal range. However, Dave knows how to work a crowd. Dave's popularity is due in part to his flamboyant showmanship and outrageous off-stage behavior. Dave is very unpredictable. No two of his shows are the same.
Wolfgang Van Halen - This one is the wildcard of the group. No one knows jack shit about Wolfgang apart from the praise that his father Eddie generously dumps on him. During the 2004 Van Hagar tour, Wolfgang appeared onstage with a guitar to play on a few songs. Eddie poured affection and praise on Wolfgang during these appearances, often kissing and hugging Wolfgang onstage. No one aside from the band members and a few guests have any idea what to expect out of Wolfgang musically or vocally.
-------------------------------
Based on the criteria above, my vote had to go to The Other Half.
