Some of us around the boards here have formed a sort of unofficial support group for fellow players in search of a meaningful tennis life beyond their old 6.1 Classics. It would seem that there's no simple way to fill that void, but there are some decent options around if you're looking for a softer racquet that will run easier on the elbow.
I never had any problems with tennis elbow despite having used those frames myself for well over a decade, but I also needed more control with my gear as I built more solid ground strokes, including a one-handed backhand. I got that control along with plenty of elbow comfort from the Volkl C10 Pro 98.
This frame has a somewhat unique personality and isn't necessarily the best alternative to the 6.1 Classic, but the Volkl 10 series models are certainly worth a look. I added some lead tape to the handles of my C10's to get the same head-light balance I've enjoyed for a long time with my Wilsons. That gives me more familiar handling around the net, but the flex in the Volkl also lets me control my full rips from the baseline with much less effort. Some frames with a lot of flex can seem relatively lifeless, but the C10 has enough zip to make me happy.
The recent Dunlop 200 Tour models could be worth a look, but I've noticed that those frames don't have as much head-light balance as the 6.1 Classics or the C10's. I'd expect one of those Dunlops to feel a bit more sluggish in stock form, especially for a 6.1 Classic user who likes to go to the net. Yonex has a couple frames that could work, including the RD Ti-80. Since I mentioned Volkl, I should also give a nod to Boris Becker. Any racquet with significantly more flex will probably have a bit less inherent pop than the 6.1 Classic, but that can allow for a less rigid string layout without sacrificing control.
