This is my experience, so take it for what it's worth:
Back in 2007, I found my
L3010 wasn't quite strong enough to handle some new tasks around my 25 acre spread so I traded it for an
L3430 HST. The extra 3 HP helped but it wasn't long before I wished I'd gone bigger. I used the
L3430 until 2015 when I again decided I needed something more powerful. Like you, I was concerned about size and tight clearance maneuverability.
The next logical step was the
L4060 but it was a larger machine with only 6 added HP. Having learned my lesson with the 3010 to 3430 trade, I decided on the
L6060 HSTC. Yeah, it's a bigger tractor physically but I was pleasantly surprised how maneuverable it was. I can get it into most of the places I used the 3010 and 3430. It has all the power I need and the cab is great for working in inclement weather.