Any recommendations for a4 personal lease

[JKRolling]

I'm looking for the new A4 3.0d sline s tronic and have had quotes from £340 to £500 a month with metallic and tech pack. Thats for quatrro version (quotes) would like to keep price as low as possible though within reason. They are also for 6000 miles pa and 3-6 months down and vary over 24-36 months. Best deal is 3 months down over 2 years and the deals I've been offered have no logic. By this i mean 6 down over 2 years is the most expensive from someone else

Ive never done a personal lease before so hoping for some advice in here. I need to agree a deal within the next week or two though so i know I've left it late.

Can anyone help with suggestions?

Many thanks
JK