All the boats are good. All sailors, well....
Any way..The boat you get depends on what you want to do over the next few years (which turns into 20).
Pleasure sail: buy what looks good at a good price and have fun and don't forget the CoolCat.
If you want to become a good sailor and ultimately a good racer you have to sail one design around the buoys against big fleets with tight lines and good racers.(my opinion/probably fact)
Finishing Top 5 in a 4 boat fleet with a 20 boat line looks good on the trophy shelf but didn't teach you anything.
In the Northeast that would be the H16 and the F18. The regatta's in div 16 are Hobie only.
( I would like to see all HCA events opened up to F18's)
Based on where you live, The Tiger seems to fit the bill.
Before I get jumped on as a HCA/Hobie guy I would like someone like Jake or Olli to comment in the importance of sailing the large one design events.
I remember reading some disappointment by Jake after this past years F18's and thought that without the opportunity to sail a lot of one design events it's hard for him to improve further even though he obviously works very hard at it and has done well in a short time.(only an opionion)

An example of what I know something about:
The Hobie 16 Nationals had 56 boats. There were 18 past National Champions or Olympians in the top 30.
When you add in past top 10 guys it gets even harder.
Finishing in the top 25(was my goal) is extremely difficult.

Just get a boat and get started. The boat will not be the issue for a long time.