Martin Logan speakers

My ESL 13a complete my latest high end system (Krell 575 mono/ Audio Research and PS Audio) and I couldn’t be happier. The subwoofer and panel are seamless; whatever problem they may have had in the past is non existent. It does have a small sweet spot. My friend owns the markedly less expensive ESL. His system is amazing. We’ve both owned lot speakers through the years and agree that the latest line by ML is our favorite. 

Echoing what's been said already, the VT130 will have no problem driving the Vistas and will be a great match.  Unless you want rock concert volume levels, but then you probably should be looking at other speakers if that's the case.  I have EM-ESL's which are pretty similar and drive them with a ARC VSI-60 and have no need for additional power.  I previously drove them with Rotel and Parasound solid state amps and Rogue tube amps.  Love them with tubes, hate them with solid state. 

My friend , the above posts are appreciated because Martin Logan speakers are very worthy of consideration. Unfortunately, they don't address your basic question. My Vistas are augmented by Martin Logan Depth I subs, so I have cured some ills. As documented above in this blog, buying old Vistas, is very risky, why take a chance on a rather old speaker, now very long out of warranty.
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I have a pair of Acent i, with a Martin Logan Desent i subwoofer. I power them with a SS Musical Fidelity intergrated amp, for a modesty priced system they sound fine to me.

To the OP, I haven't listened to Vistas specifically, but I've owned an older model in the Aeon i's, and a newer model in the Expression 13As, and I can say that yes MLs are very directional, and yes panel to woofer integration hasn't been a strength of theirs, but both of these are much improved with the newer models, imo.  I'm not sure where the Vistas sit in this spectrum, but If you can get a good deal, and you have a dedicated room where you can really fine tune the listening and speaker positions, then electrostats can be magical.  Don't throw them in the corners of a multipurpose living room and expect to get the same results.  

As for the 13As, I decided to stick with ML when I chose them over other dynamic / cone speakers like the Sopra 2s (which I also really liked) because they just blew everything else I demoed away in terms of imaging.  I will grant that you are probably giving something up in terms of dynamic slam vs a cone speaker, but larger panels help, and so do subs, so I'm not lacking for dynamics or low end extension. 

I still went with MLs even though I'm primarily a rock and electronic music guy and could afford more expensive dynamic speakers.   Hope that helps.