It would depend on when you want to plant them. Both plant well, you just plant bare rooted roses from Nov to march whereas pot grown can be planted at anytime, providing you can water them well until they're established.

Many thanks Andy as I have turned an area in my garden to take roses so can plant them now.

Shouldn't be a problem...lots of water though !!!!

Can certainly do that Andy and we do get rain.

I have just placed my order with Coblands.