I started playing tennis about a year ago and I play about twice a month but I want to join a club and therefore upgrade from my $20 Walmart racket

. I limited it down to three rackets based on a pretty good amount of reading I did. I want a racket which will be good for a beginner and then great for an intermediate player.
I limited it down to the:
Volkl DNX 4 ($125) Head Size: 105
Length: 27.60 "
Strung Weight: 10.4 oz.
Balance: 1 pts Head Light
GAMMA — C-4 ($120) Head Size: 100
Length: 27.25 inches
Weight: Strung — 10.6 oz
Balance: 13.5
Wilson K Factor KCourt Head Size:100 sq. in. / 645 sq. cm.
($100) Length: 27 inches / 69 cm
Strung Weight: 9.9oz / 281g
Balance: 1pts Head Light
I can't really make up my mind on these rackets so if any of you guys can help me out I would greatly appreciate it. Also if it needs more info on the racket specs I'll post it up. Thanks