Personally, I think the sports games for the Turbo are quite fun and I'll take them over a licensed sport game any day. My thoughts on your games:
World Class Baseball - Excellent baseball game! If you're into old skool baseball video games, you'll feel right at home in this one. The game has a great feel and is a blast on two players.
Davis Cup Tennis - I never got much into this game, though some people think it's a great game. I prefer Final Match Tennis for PCE.
Power Golf - I've only played this game once and it was very briefly, so I can't really remember it. I have the Japanese version, maybe I should load it up soon.
TV Sports Football - Haven't played this one much either, it just seems like basic football mumbo jumbo. I'm not into football, so that's probably why I don't ever play this game.
TV Sports Basketball - A person on these boards by the name of doom something (doomspear is it? doomfrayer?) is a huge fan of this game and he made a thread about it before incase you want to look it up. I need to get this game to play it more, so all I can say is it seems like an ok basketball game.
Takin' It To The Hoop - I actually have a lotta fun with this game, though it gets boring afterall. It's a very fun little game to play for a quarter and it's simple to pick up and play.
World Court Tennis - The tennis mechanics of this game are pretty plain and I've got no problem with that personally. What really makes this game interesting is the RPG quest mode which is rather hilarious.
Champions Forever Boxing - There are only two boxing games I like: Punch-Out games and K.O. Boxing (DOS). Other than that, I usually don't like them. This game has the same clunky gameplay that turns the quick gamer off. However the title screen song is awesome and the graphics are kind of cool, though cheesy, if I remember. I recommend Digital Champ for PCE, which is decent.
Other sports games that I would recommend:
Battle Royale - OK I understand this game may seem like the mega cheese, but it's really fun! Just like boxing games, I can't stand wrestling games for the most part because the controls take too long to get used too and just don't feel comfortable. The controls in this game however are a breeze and is a incredible experience when you play this game with four other players
. My avatar comes from my favorite character of the game, Spitfire Spike, but all of the characters are unique and great. Hilarious, easy, and pure fun; what more do you want?
Digital Champ - I know I said I only like a couple boxing games, but this one is fun too sort of. It's a little hard to play at first, but it's entertaining when you get used to it and win a couple of fights. The graphics are cool too. (and the cover)
Dodge Danpei - Okay well maybe this isn't so sports-ish, but sue me
. This game is more of a RPG and the dodge ball battles depend more on tactics than actual sport mechanics. However it's an excellent and really fun game to play and is definitely a PCE game that could use a lot more attention.
Final Match Tennis - A simple, competitive, and downright FUN tennis game!
Fire Pro Wrestling 1 through 3 - I'm not into these games myself, but I believe some people like those Pro Wrestling games. What I do really like about them are the awesome characters
.
Kunio Kun Soccer - I'm not really into soccer games except Soccer for Atari 2600 and Mega Man Soccer, but I find this game to be rather fun. It's got a few neat manuveurs you can do on the field that come in handy and add extra fun to the game and stars your favorite Kunio characters.
Power League II through V - The first Power League is World Class Baseball in America. It doesn't seem like the gameplay changes much in the sequels, but the graphics and sound get more impressive, so give them a try.
World Sports Competion - I love olympic games like this and Track and Field for NES, though I'm not sure what other people think of them. It's loaded with a variety of fun little games to play and it keeps me entertained when I play it once a year or whenever. I also highly recommend choosing the black athelete with the hot pink suit.