There both horrible! My mate bought a new phone yest and got to try these two out!
Get the N95 its way better!
N95 is big, slow and will crash every 5 minutes. I sold my N80 for a K800i which is the same as a K810i bar looks, SE runs a lot lot faster, doesn't crash (with generic firmware anyway) and takes brilliant quality photos.
Samsung is tosh, mate at works got it, crashes on him all the time.
K810i will destroy itself within 6 months if it is anything like the k800i. Worst phone i've ever had.
Every K800i I know of has an issue of some sort. The most common problem is the 'operation failed' message which prevents launching any application. Others also turn themselves off at will, lock up for 5-10 mins then perform every button pressn in a random flurry of action then lock up again, won't allow a USB connection.K810i will destroy itself within 6 months if it is anything like the k800i. Worst phone i've ever had.
The k750 broke down lots, but the k800 is fine.
Go for the k810, my mates just got one, lovely phone.
The samsungs are very basic, rubbish.