For security, looks and durability, this ProSteel flush steel entry door or this ProSteel 6 panel steel entry door which is available for purchase at Lowes among other stores would definitely fit the bill and be a good purchase. When it comes to finding an appropriate entrance door for your home, you definitely want to take strength into consideration, just like you would aesthetic reasons. This ProSteel metal front door is indeed well built and features a construction of steel along with an insulated inner core which in turn makes this unit much more energy efficient. These doors also come with a security lock plate and it's pre bored for a deadbolt and lockset. You really can't beat this classic 6 panel design; it's quite charming and such a traditional piece which goes well in almost any decor. However, if you don't like the panel design, then you can always check out their flush door which features a flat finish which is striking yet simple. So if you're in market for a new entry door, then these units from Lowes would be worth a look. 
ProSteel 36" 6-Panel Steel Door Unit
"Durable steel door construction with a 6 Panel profile. Energy saving insulated inner core. Steel security lock plate. Pre-bored for lockset and deadbolt" 
ProSteel 32" Flush Steel Entry Door Unit
"Durable steel flush door construction. Energy saving insulated inner core. Steel security lock plate. Pre-bored for lockset and deadbolt" These doors are from lowes.com
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