spherical bearing conversion

I've been looking at stracher motorsports bearing conversion for front and rear as they look like a good price and good quality. Anyone fitted any to give an opinion on the difference they've made?
Also i can't find a definitive answer but how long would they last? I know rose joints don't have much of a life

Im sure someone will pop along regarding the waiting times stracher motorsport have and poor communication ......

He was good to me said he had it all ready to go next day delivery.
I was also looking at the rear parallel arms but as with most rosejoints they don't last so decided to go for polybushes

polybush good way go
spherical bearing good for serious track use but awful for much else .

Yeah if you are using your R for daily driving forget it. Poly bushes are the way to go. Im waiting for a set of parallel links and hubs off him. Sent multiple emails asking if my goods have been sent with no reply, still have no idea whats going on, been 7 weeks.

Just the answer i was after but 7 weeks thats terrible and as he's in italy makes that very hard. Have you messaged him publically on his facebook page?
Might just go for the antilift kit if he saids he has it ready to go.

Nah not on facebook, ill wait a little longer. Im not saying Ive been ripped or anything. He has always been helpful with me regarding questions with his products but the lack of communication is an issue as I'm (and others) have been left wondering whats happening. I did get a reply a week ago saying he'd look into it (not confirming they have even been posted) but heard nothing since.

I'm not trying to write the guy off publicly or anything, just stating the facts about communication so people here know. I'm a pretty patient person, I know some people that would be sending daily emails when they didn't get a response

^ is a bit off that. best just being straight, ie: if still waiting on stuff being machined say so, if shipped but seems delayed say so.
geting answers that don't really answer anything is not good .
Shame really as guy put some serious effort in on the hassle of getting things designed & made ...

It is a shame as ive seen hes web page and all the bits that have been made and look qaulity .... but thats no good if you cant even communicate with you customers afterall no customers no business if your just too busy to do so then appoint some one to do it for you ....

Gets back to me pretty quick on facebook. I'd just sign up just to message him on his fb page