BMW vs lexus

Hi, I'm currently on the market for a newer car, 1 want something faster that fits my budget and still looks nice and I found the f30 340i fits perfectly now the problem is the way the interior looks and reliability, I heard good things about 058 but how reliable really is it? And the interior of my 14' is250 definitely looks better than the 17' 340i | been looking at but the power you get from 340i and the sound you can't beat it. At the end of the day I can go for is350 but even though it's faster it still lacks that power, I need opinions for both brands and what should I really go for