E63 is a thicker dimension similar to Blackberry, E71 is much thinner. The casing is soft plastic and is more colorful and more suited for trendy users with a tight budget. The phone headset is a 3.5mm jack, no adapter needed if you are using your own better quality headphones. No GPS chipset, so great to get lost and explore.
It all started out when my interests grew on nokia's Eseries. I didn't get one for myself in the first place, not before I bought 2 E51 for my wife and my mum. I loved the Eseries.. finally I got myself a E71. A really cool phone! (best viewed on Firefox)