I've only got a few more eps I can do before I run out of R2. The list of archived complete eps with recap and preview (as in the existing source, not my restoration) is:
108 123 Goku's Special Technique* (first ep of the dub)
109 124 Z Warriors Prepare*
110 125 Goku's Ordeal*
111 126 The Androids Appear*
112 127 A Handy Trick*
114 129 Upgrade To Super Saiyan
144 159 The Last Defense*
147 162 Trunks Ascends
151 166 What is the Tournament?
152 167 The Doomsday Broadcast
154 169 No Worries Here
156 171 Memories of Gohan
187 202 Gohan's First Date
189 204 Blackmail
192 207 Take Flight Videl
193 208 Gather for the Tournament
194 209 Camera Shy
221 236 The Warrior's Decision
226 241 Global Announcement
228 243 The Z Sword
229 244 Race to Capsule Corp.
230 245 Super Saiyan 3?!
232 247 The Fusion Dance
233 248 Goku's Time is Up
234 249 Return to the Other World
235 250 Out From the Broken Sword
236 251 Gotenks Is Born
237 252 Unlikely Friendship
238 253 I Kill No More
239 254 The Evil of Men
240 255 Buu Against Buu
241 256 Empty Planet
242 257 Time Struggle
243 258 Super Moves of Gotenks
244 259 Trapped in Forever
245 260 Feeding Frenzy
246 261 Gotenks Is Awesome!
247 262 Unlucky Break
248 263 A Whole New Gohan
250 265 Majin Buu Transforms
251 266 The Old Kai Weapon
252 267 Ready to Fuse?
253 268 Union of Rivals
254 269 Meet Vegito
256 271 Vegito Downsized
257 272 The Incredible Fighting Candy
258 273 The Innards of Buu
259 274 Mind Trap
260 275 Deadly Vision
261 276 Evil Kid Buu!
262 277 End of Earth
263 278 True Saiyans Fight Alone
264 279 Battle for the Universe Begins
265 280 Vegeta's Respect
266 281 Minute of Desperation
267 282 Old Buu Emerges
268 283 Earth Reborn
The eps marked * have been edited, though some are missing paintovers. (276/291 is the last episode.)
The other (unlisted) episodes are missing one, the other, both, or even (in a few cases) part of the episode.
I have the eyecatch used for episodes 185/200 and later. It is the same eyecatch used in Japan, with different BGM. I have no idea what, if any, eyecatch was used for 108/123-184/199.
AFAICT, there was one closing logo bumper (AB Distribution); an NTSC-ized version of this has been attached to the closing credits for my encodes.
Apparently, the two versions of the ED were used in different episodes in different regions! I believe the most logical route, despite my sources, would be to switch at 185.