Synthetic Oil, Good or Bad?

Are you using Synthetic oil?
 
Do you prefer the synthetic blend?
 
Do you feel any differences with the operation of your bike?
 
I have gotten different reponses to the use of Syn oil and the blends. People are saying it wears your clutch plates a little faster, but your engine life should be longer with Synthtic use. I want to know how it's working on our bikes: CBR1000RR's.
 
Any info or input would be appeciated.
 
P.S. I have 4100 miles on my CBR1000RR.   We are told we can start using Synthetic oil after 4000 miles.

amsoil ea synthetic oil filter and 10-40 since 1k miles - now at 3800- hard shifts no clutch slippage what so ever

I used Castrol Syntech but I would not reccommend it. I followed the guidlines and bought the non-energy conserving oil. My shifting seemed to be the same or even a little rougher.

Then I tried Repsol Synthetic. It was more expensive, but well worth it. My bike shifts very smooth with a solid feel. I will always pay more and buy this oil from now on. You should try it at least once (I bought the 10W-50)

quote:

ORIGINAL: Onarom

I used Castrol Syntech but I would not reccommend it. I followed the guidlines and bought the non-energy conserving oil. My shifting seemed to be the same or even a little rougher.

Then I tried Repsol Synthetic. It was more expensive, but well worth it. My bike shifts very smooth with a solid feel. I will always pay more and buy this oil from now on. You should try it at least once (I bought the 10W-50)

defintely a thumbs up on the repsol- i tried  motul 5100 synthetic blend- very notchy shifting after 1 k miles- not even as good as hp4 honda- i use amsoil as i'm sponsored  by them-phil

I'm using Motorex Fully Synthetic 10 / 50. Nice smooth clutch operations up till 4/5K km..like the Motul 300V but this Motul thing will only last you a good 1000KM only.
Truly race oil..not really suitable for road use..

Thanks for the reponses.

Mobil-1, 15w-50w full syn, no problems with my 93 f-2

Shell Rotella Synthetic from Walmart.  About $16 per gallon in the blue container.  Easy shifting, no breakdown that I can tell during changes.  I also use Purolator PL14612 filters.

1 gallon for 16 bucks thats a hot deal right there.

I was just told, from the honda people, HP4 Honda oil is coming out with a new full synthetic oil. Mobil 1 makes HP4 if anyone didn't know that.

From 2 of the best Honda tech's / Service managers I know.

First 600 mile change use Non Synthetic Honda 10/40
After 3000 miles change to Honda HP4 Synthetic Blend (Gold Bottles)
Change every 3000.

One of them has a 919 with 80,000 miles on it always ran HP4.

Opinions are one things 80,000 trouble free miles is another.