Depends a little on what you are looking for. I have been a member of several sites and retain a membership of only two -
www.Tickletown.com and
www.Frenchtickling.com. The reason for this is simple. They are the two sites where the content:money ratio makes it worthwhile keeping up the membership as opposed to letting content build up over some time and then taking out another membership.
Tickletown is cheap and it has a regular monthly update of a 15-20 minute movie with usually another shorter one thrown in., plus a bit of artwork. There is no past content on the site, so you go for the update only.
Frenchtickling has probably the most content stored of any site on the market - over 5 GB's by now, I should think. And they update regularly once a week with 5 clips of their latest movie. This accumulates on the site.
There are certainly sites with a great deal of content which warrant a once-off membership.
www.Tickling.ws (updates about once a month at present) has a good build-up of content. So do Ticklingparadise(updates weekly, but toolittle content to warrant full-time membership),
www.Acefootproductions.com (sporadic updates),
www.Tickling-bondage.com (regular updates but too expensive to keep permanent membership), Brazilian tickling site,
www.cocegas.com.br (also regular updates, with a good amount of accumulated content),
www.Dungeonmaidens.com (lots of content, but updates very seldom),
www.Tickleflix.com (lots of content but no updates for over a year now),
www.Extremetickling.com (a collection of material from other sites, some now defunct, but no updates for ages - very cheap, though) and Foottime.com, a good site with a mixture of fetishes and weekly updates.
I have mentioned only the Paysites with a lot of tickling content. The Last Laugh, incidentally, is not a paysite, but sells only clips and videos, as do many of the good sites.
You are looking for one site to try out, so I assume that you are less interested in newer sites with less accumulated content, shorter clips or varied fetishes, and therefore won't mention these, though there are several that I have fleetingly got to know.