I recently put a New Dimensions tower on my 2001 Maristar 210VRS. I really like the way the ND tower looks on the boat.
I installed the tower myself, and it really wasn't difficult.
I was very pleasantly surprised to find that my boat had the aluminum backing plates already glassed in place for the ND tower. That is another reason to go with the ND tower. You should already have the reinforcing backing plates in your boat that will line up with the ND tower bolts. If you are handy you may consider installing yourself. There are good instructions with the tower, Wayne at ND will email them to you in advance and answer any questions. You can also find lots of good tips online. One of the best tip I found was to use a couple strong magnets to locate bolt placement on inside / outside before drilling.