So I'm currently in the market for a new Prius. However, I can't decide between the 3 and 4. I'm not really interested in any of the extra do-dads, but since I'm going to be commuting in this car for work daily, I need it to be comfortable. I like that the 4 has faux leather, heated seats with power control and lumbar support, but I really don't know if that is worth the extra $3,000. See, I can buy aftermarket heated seat covers for (just the two front seats) $1500 and then add in a lumbar cushion if necessary, but I have power seats now and they're much more convenient and safer than manual seats when driving. So is the upgrade to the 4 worth it for seat options?