I have a Wilson trimmer & like it for a couple of reasons.
I don't need the bells & whistles that the Forster can carry, just want to trim cases square, accurately, quickly & easily. (I deburr/chamfer by hand & don't want to start neck turning or reaming).
The Wilson doesn't use pilots - it doesn't need them as the case is very well supported up close to the cutter.
IMHO pilots impede chip formation & swarf clearance from the cutting area.
I've used Lee trimmers a lot & the pilot rod seems to slow operation down (aligning the pin in the flash hole).
Wilson is very fast in use - not fiddly to load & unload (can do it blindfold - not that I do).
I don't like chucks that grip the extraction groove - I've had some difficulty with my Lee Zip Trim universal chuck.
I do 223, 243, 308 & 30-06 so just need 3 case holders. (about £12 each)
I've not used a Forster so won't knock it - I have tried the RCBS, Redding & Lyman & they are all too fiddly for fast ergonomic operation.
If you can, actually operate the different types - you'll soon know which is best for you. --- As I said I like my Wilson.
Ian