Check out this sight:
WWW.boatered.com
It is probably the best boating sight I have found. It is more of a general boating site, based on the east coast. They don't seem to have much Jet Boat or Aluminum boat advice,
but you can't beat it for information.
It is broken down into several forums.
Such as:
Ask the Captain
Engines
Fabrication and detailing
ETC
Use the search engine and I am sure you will find what you want.
My two cents:
Go with the Bennets. More whiz-bang trim tab control add-on stuff and a VERY established company.
I have looked at the Lenco Tabs and their main attraction to me is they are electric and it seems they might be easier to install.
Check out
www.powerboat-reports.com
They did a comparison on all the trim tabs a couple of months ago. Bennet, Lenco and a few others. You can purchase that article for about 10 bucks or so. They like the Bennet Trim Tabs the best, with Lenco a close second.
Also, if you are going to do a new installation yourself, check out
www.shipshapetv.com. One of their videos (not free-you have to buy it) deals with Trim Tab installation.
Mike