Bike's a write off - What to replace with

Last Monday I was hit by a car on my daily commute and my Cannondale Synapse 105 is a write off (details of the incident below, let's keep this discussion about the replacement bike).

So, my local bike shop has suggested that my Cannondale Synapse 105 Ally (disc, 2016) is a complete write off. As a result I should be set sor an insurance payout of £1,100 (£1,000 for the bike and £100 for the broken Shimano Pedals).

I considered a straight up replacement and just buying a new Synapse again. I love that it's disc as the increased stopping power is much appreciated (although, it didn't save me on this occasion) but for just a few hundred more I can step up to bikes such as:

• Cannondale CAAD 12 at £1,200
• Giant Propel 2 at £1,299

It's not imperative that my replacement have discs, but I am looking for something that will be possibly lighter or have a more aggressive geometry, hence the two bikes above.

The £1,200 mark though does sit precariously below the next step up though. For as little as £1,500 I can start getting Ultegra instead of 105's.

So, what are your thoughts? Stick with a Synapse, take 1 step up to something in the £1,200 region of step up to Ultegra? Whatever you think - can you please suggest a corresponding bike for that price range.

I've been riding road bikes for about 6 months, but mountain bikes for years (hence my preference for discs I guess). I'm very fit and average 20mph on most rides now and do about 70 - 120 miles per week and often a 40mile ride most weekends.

Roads near me in Virginia Water in Surrey aren't overly smooth which is why I'm quite keen on a set of 25's instead of 23mm's, but am open to any suggestion.

The Incident

On Monday 16th I was hit by a car just outside my office. It was 7:15am and I'd just done 22 miles. I was going around a medium roundabout (single lane) and from a stationary position a car pulled out and hit me in the side. It's been concluded that the driver was at fault, so no issues there. Won't be back on the bike for at least another 3 or 4 weeks though (late June) whilst I recover. No breaks, but a sore shoulder and some weakness in the left arm, most likely from a muscle or ligament tear. Having Physio starting next week.

Thanks in advance all.